| 
                Total assets
             | 
                        
                90.3B
             | 
                        
                101.1B
             | 
                        
                96.5B
             | 
                        
                105.4B
             | 
                    
                
                        | 
                Current assets
             | 
                        
                22.4B
             | 
                        
                25.1B
             | 
                        
                22.6B
             | 
                        
                26.2B
             | 
                    
                
                        | 
                Cash
             | 
                        
                1.1B
             | 
                        
                1.3B
             | 
                        
                1.4B
             | 
                        
                1.5B
             | 
                    
                
                        | 
                Cash equivalents
             | 
                        
                3.7B
             | 
                        
                4.5B
             | 
                        
                4.8B
             | 
                        
                4.9B
             | 
                    
                
                        | 
                Cash and cash equivalents
             | 
                        
                4.8B
             | 
                        
                5.8B
             | 
                        
                6.2B
             | 
                        
                6.3B
             | 
                    
                
                        | 
                Other short term investments
             | 
                        
                32.1M
             | 
                        
                20M
             | 
                        
                77M
             | 
                        
                69M
             | 
                    
                
                        | 
                Accounts receivable
             | 
                        
                7.2B
             | 
                        
                8.4B
             | 
                        
                7.2B
             | 
                        
                6.0B
             | 
                    
                
                        | 
                Other receivables
             | 
                        
                2.5B
             | 
                        
                2.1B
             | 
                        
                2.0B
             | 
                        
                2.1B
             | 
                    
                
                        | 
                Inventory
             | 
                        
                4.6B
             | 
                        
                5.4B
             | 
                        
                4.7B
             | 
                        
                9.0B
             | 
                    
                
                        | 
                Prepaid assets
             | 
                        
                1.5B
             | 
                        
                1.6B
             | 
                        
                1.3B
             | 
                        
                1.5B
             | 
                    
                
                        | 
                Restricted cash
             | 
                        
                112.0M
             | 
                        
                102M
             | 
                        
                162M
             | 
                        
                0
             | 
                    
                
                        | 
                Assets held for sale
             | 
                        
                0
             | 
                        
                0
             | 
                        
                150M
             | 
                        
                368M
             | 
                    
                
                        | 
                Hedging assets
             | 
                        
                46.9M
             | 
                        
                116M
             | 
                        
                87M
             | 
                        
                83M
             | 
                    
                
                        | 
                Other current assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                105M
             | 
                    
                
                        | 
                Non current assets
             | 
                        
                67.9B
             | 
                        
                76.1B
             | 
                        
                73.9B
             | 
                        
                79.1B
             | 
                    
                
                        | 
                Properties
             | 
                        
                40.8M
             | 
                        
                36M
             | 
                        
                32M
             | 
                        
                33M
             | 
                    
                
                        | 
                Land and improvements
             | 
                        
                5.7B
             | 
                        
                6.5B
             | 
                        
                5.4B
             | 
                        
                6.4B
             | 
                    
                
                        | 
                Machinery furniture equipment
             | 
                        
                8.3B
             | 
                        
                9.2B
             | 
                        
                7.9B
             | 
                        
                8.2B
             | 
                    
                
                        | 
                Construction in progress
             | 
                        
                2.4B
             | 
                        
                2.0B
             | 
                        
                2.7B
             | 
                        
                2.7B
             | 
                    
                
                        | 
                Leases
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Accumulated depreciation
             | 
                        
                -7.7B
             | 
                        
                -8.6B
             | 
                        
                -7.7B
             | 
                        
                -8.3B
             | 
                    
                
                        | 
                Goodwill
             | 
                        
                68.8B
             | 
                        
                78.2B
             | 
                        
                78.9B
             | 
                        
                82.4B
             | 
                    
                
                        | 
                Investment properties
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Financial assets
             | 
                        
                158.0M
             | 
                        
                228M
             | 
                        
                74M
             | 
                        
                102M
             | 
                    
                
                        | 
                Intangible assets
             | 
                        
                32.3B
             | 
                        
                38.1B
             | 
                        
                39.3B
             | 
                        
                42.4B
             | 
                    
                
                        | 
                Investments and advances
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other non current assets
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Total liabilities
             | 
                        
                54.8B
             | 
                        
                62.0B
             | 
                        
                59.4B
             | 
                        
                66.1B
             | 
                    
                
                        | 
                Current liabilities
             | 
                        
                24.2B
             | 
                        
                30.5B
             | 
                        
                26.3B
             | 
                        
                22.6B
             | 
                    
                
                        | 
                Accounts payable
             | 
                        
                3.2B
             | 
                        
                3.3B
             | 
                        
                2.6B
             | 
                        
                2.8B
             | 
                    
                
                        | 
                Accrued expenses
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Short term debt
             | 
                        
                2.2B
             | 
                        
                5.4B
             | 
                        
                5.5B
             | 
                        
                1.9B
             | 
                    
                
                        | 
                Deferred revenue
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Tax payable
             | 
                        
                1.6B
             | 
                        
                2.1B
             | 
                        
                1.4B
             | 
                        
                1.4B
             | 
                    
                
                        | 
                Pensions
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Other current liabilities
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Non current liabilities
             | 
                        
                30.6B
             | 
                        
                31.4B
             | 
                        
                33.1B
             | 
                        
                43.5B
             | 
                    
                
                        | 
                Long term provisions
             | 
                        
                799.3M
             | 
                        
                1.1B
             | 
                        
                896M
             | 
                        
                956M
             | 
                    
                
                        | 
                Long term debt
             | 
                        
                24.0B
             | 
                        
                23.2B
             | 
                        
                23.7B
             | 
                        
                28.9B
             | 
                    
                
                        | 
                Provision for risks and charges
             | 
                        
                1.7B
             | 
                        
                2.6B
             | 
                        
                3.4B
             | 
                        
                3.3B
             | 
                    
                
                        | 
                Deferred liabilities
             | 
                        
                2.9B
             | 
                        
                2.8B
             | 
                        
                2.9B
             | 
                        
                6.2B
             | 
                    
                
                        | 
                Derivative product liabilities
             | 
                        
                99.8M
             | 
                        
                38M
             | 
                        
                943M
             | 
                        
                1.6B
             | 
                    
                
                        | 
                Other non current liabilities
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Shareholders equity
             | 
                        
                
             | 
                        
                
             | 
                        
                
             | 
                        
                
             | 
                    
                
                        | 
                Common stock
             | 
                        
                336.7M
             | 
                        
                388M
             | 
                        
                387M
             | 
                        
                387M
             | 
                    
                
                        | 
                Retained earnings
             | 
                        
                2.7B
             | 
                        
                1.5B
             | 
                        
                -574M
             | 
                        
                1.7B
             | 
                    
                
                        | 
                Other shareholders equity
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Total shareholders equity
             | 
                        
                35.5B
             | 
                        
                39.2B
             | 
                        
                37.1B
             | 
                        
                39.3B
             | 
                    
                
                        | 
                Additional paid in capital
             | 
                        
                30.7B
             | 
                        
                35.3B
             | 
                        
                35.3B
             | 
                        
                35.3B
             | 
                    
                
                        | 
                Treasury stock
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                        
                —
             | 
                    
                
                        | 
                Minority interest
             | 
                        
                73.8M
             | 
                        
                23M
             | 
                        
                21M
             | 
                        
                19M
             |