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Lines of Credit, Senior Notes and Other Borrowings - Narrative (Details)
1 Months Ended 12 Months Ended
Feb. 28, 2021
USD ($)
Aug. 31, 2018
USD ($)
Mar. 31, 2016
EUR (€)
Nov. 30, 2014
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Feb. 28, 2021
EUR (€)
Debt Instrument [Line Items]                
Repayment of 2021 Notes         $ 0 $ 0 $ (503,285,000)  
Stork Holding B.V.                
Debt Instrument [Line Items]                
Other borrowings         $ 34,000,000 $ 44,000,000    
Senior Notes 4.25%, Due 15 September 2028                
Debt Instrument [Line Items]                
Debt instrument, face amount   $ 600,000,000            
Interest rate   4.25%            
Proceeds from issuance of notes, net of underwriting discounts   $ 595,000,000            
Senior Notes 4.25%, Due 15 September 2028 | Prior to June 15, 2028                
Debt Instrument [Line Items]                
Redemption price (as a percent)         100.00%      
Senior Notes 1.750%, Due 21 March 2023                
Debt Instrument [Line Items]                
Debt instrument, face amount | €     € 500,000,000          
Interest rate     1.75%          
Proceeds from issuance of notes, net of underwriting discounts | €     € 497,000,000          
Senior Notes 1.750%, Due 21 March 2023 | Minimum | Prior to December 21, 2022                
Debt Instrument [Line Items]                
Redemption price (as a percent)         100.00%      
Senior Notes 3.5%, Due 15 December 2024                
Debt Instrument [Line Items]                
Debt instrument, face amount       $ 500,000,000        
Interest rate       3.50%        
Proceeds from issuance of notes, net of underwriting discounts       $ 491,000,000        
Senior Notes 3.5%, Due 15 December 2024 | Minimum | Prior to September 15, 2024                
Debt Instrument [Line Items]                
Redemption price (as a percent)         100.00%      
Senior Notes Due 2018, 2016 and 2014                
Debt Instrument [Line Items]                
Redemption price (as a percent)         101.00%      
Lines of credit | Committed lines of credit                
Debt Instrument [Line Items]                
Letters of credit outstanding         $ 418,000,000      
Lines of credit | Committed lines of credit | Subsequent Event                
Debt Instrument [Line Items]                
Letters of credit outstanding $ 934,000,000              
Lines of credit | Committed lines of credit | Revolving Loan and Letter of Credit Facility                
Debt Instrument [Line Items]                
Maximum borrowing capacity         $ 1,800,000,000      
Lines of credit | Committed lines of credit | Revolving Loan and Letter of Credit Facility | Minimum                
Debt Instrument [Line Items]                
Debt-to-capitalization ratio (cannot exceed)         60.00%      
Lines of credit | Committed lines of credit | Revolving Loan and Letter of Credit Facility | Minimum | Subsequent Event                
Debt Instrument [Line Items]                
Credit facility $ 1,650,000,000              
Debt-to-capitalization ratio (cannot exceed) 65.00%              
Lines of credit | Committed lines of credit | Revolving Loan And Letter Of Credit Facility Agreement                
Debt Instrument [Line Items]                
Maximum borrowing capacity         $ 1,700,000,000      
Lines of credit | Uncommitted Credit Line                
Debt Instrument [Line Items]                
Credit facility         $ 862,000,000      
Subsidiaries | Lines of credit | Committed lines of credit | Revolving Loan and Letter of Credit Facility | Subsequent Event                
Debt Instrument [Line Items]                
Covenant minimum liquidity $ 1,500,000,000              
Covenant, minimum liquidity after repayments of debt 1,250,000,000              
Subsidiaries | Lines of credit | Committed lines of credit | Revolving Loan and Letter of Credit Facility | Maximum | Subsequent Event                
Debt Instrument [Line Items]                
Cap on aggregate amount of debt (greater of) $ 750,000,000             € 750,000,000