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Derivative Financial Instruments (Details Textual)
Dec. 31, 2020
USD ($)
Jun. 26, 2020
USD ($)
Dec. 31, 2019
USD ($)
Mar. 11, 2016
EUR (€)
Derivative [Line Items]        
Net unrealized gains on cash flow hedges $ 3,000,000      
Face amount   $ 500,000,000    
Foreign Exchange Contract        
Derivative [Line Items]        
Notional amount 0   $ 0  
Cross Currency Swap        
Derivative [Line Items]        
Notional amount $ 1,249,000,000   714,000,000  
Senior Notes Due 2023        
Derivative [Line Items]        
Interest rate 2.25%      
Debt fair value $ 640,000,000   591,000,000  
Senior Notes Due 2023 | Senior Notes        
Derivative [Line Items]        
Interest rate       2.25%
Face amount | €       € 500,000,000
Designated as Hedging Instrument | Long-term Debt        
Derivative [Line Items]        
Derivative, fair value $ 610,000,000   $ 554,000,000