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Financial Instruments and Fair Value - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Apr. 30, 2022
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Equity method investments   $ 31,000,000   $ 31,000,000   $ 22,000,000
Stranded tax benefits reclassified to earnings   17,000,000   17,000,000    
Unrealized gains associated with cancelled swaps   8,000,000   8,000,000    
Reclassification from AOCI   7,000,000 $ 7,000,000 10,000,000 $ 14,000,000  
Unrealized gains   72,000,000   72,000,000    
Designated as Hedging Instrument            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Unrealized gain (loss) on investments   33,000,000 (5,000,000) 143,000,000 48,000,000  
Cross-currency fixed interest rate swap | Not Designated as Hedging Instrument            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Notional amount   1,085,000,000   1,085,000,000   1,212,000,000
Cross-currency fixed interest rate swap | Designated as Hedging Instrument            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Notional amount   3,050,000,000   3,050,000,000   $ 3,800,000,000
Forward-starting interest rate contracts designated as cash flow hedges | Designated as Hedging Instrument            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Unrealized gains   53,000,000   53,000,000    
Forward-starting interest rate contracts designated as cash flow hedges | Designated as Hedging Instrument | Cash Flow Hedging            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Cash received for derivative settlement $ 132,000,000          
Interest rate swaps, net of tax   $ 0 $ 0 $ 0 $ 0