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Debt and Financing Arrangements (Details)
1 Months Ended 6 Months Ended
Feb. 06, 2019
Nov. 06, 2018
May 29, 2017
USD ($)
Jul. 27, 2016
USD ($)
May 31, 2017
USD ($)
Feb. 28, 2017
USD ($)
Mar. 31, 2019
May 29, 2017
EUR (€)
Aug. 19, 2016
EUR (€)
Aug. 19, 2016
USD ($)
Original Credit Facilities | Revolving credit facility                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity       $ 1,500,000,000.0            
Original Credit Facilities | Revolving credit facility | Minimum                    
Debt Instrument [Line Items]                    
Commitment fee on unused portion of commitments (as percent)       0.15%            
Original Credit Facilities | Revolving credit facility | Maximum                    
Debt Instrument [Line Items]                    
Commitment fee on unused portion of commitments (as percent)       0.45%            
Original Credit Facilities | Term Loan                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity       $ 1,500,000,000.0            
Repayments of lines of credit     $ 200,000,000   $ 200,000,000 $ 100,000,000        
Original Credit Facilities | Term Loan | Prior to July 27, 2019                    
Debt Instrument [Line Items]                    
Commitment fee (as percent)       1.25%            
Original Credit Facilities | Term Loan | Each quarter thereafter prior to final maturity                    
Debt Instrument [Line Items]                    
Commitment fee (as percent)       2.50%            
Amended Credit Facilities | Credit facility                    
Debt Instrument [Line Items]                    
Net leverage to EBITDA multiple   4.5   3.5            
Amended Credit Facilities | Credit facility | LIBOR | Minimum                    
Debt Instrument [Line Items]                    
Basis spread (as percent)   1.25%   1.25%            
Amended Credit Facilities | Credit facility | LIBOR | Maximum                    
Debt Instrument [Line Items]                    
Basis spread (as percent)   2.50%   2.25%            
Amended Credit Facilities, Tranche 1 | Credit facility                    
Debt Instrument [Line Items]                    
Net leverage to EBITDA multiple 2.5                  
Amended Credit Facilities, Tranche 2 | Credit facility                    
Debt Instrument [Line Items]                    
Net leverage to EBITDA multiple 4.0                  
4.875% Notes due in 2026 | Unsecured debt                    
Debt Instrument [Line Items]                    
Face amount of debt                   $ 900,000,000.0
Interest rate (as percent)             4.875%   4.875% 4.875%
3.50% Notes due in 2024 | Unsecured debt                    
Debt Instrument [Line Items]                    
Face amount of debt | €                 € 1,000,000,000.0  
Interest rate (as percent)             3.50%   3.50% 3.50%
European Investment Bank Loan - EURIBOR plus 0.90% due in 2022 | Unsecured debt                    
Debt Instrument [Line Items]                    
Face amount of debt | €               € 165,000,000    
European Investment Bank Loan - EURIBOR plus 0.90% due in 2022 | Unsecured debt | EURIBOR                    
Debt Instrument [Line Items]                    
Basis spread (as percent)     0.90%       0.90%