XML 125 R94.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Debt (Debt Exchange) (Narrative) (Details) - USD ($)
$ in Millions
1 Months Ended 11 Months Ended 12 Months Ended
Dec. 31, 2019
Nov. 19, 2019
Dec. 31, 2019
Dec. 31, 2018
Debt Conversion [Line Items]        
Date of exchange     Nov. 20, 2019  
Original debt   $ 1,839    
New debt     $ 250 $ 250
Cash consideration $ 373      
Accrued and unpaid interest 19   $ 19  
Debt exchange fees 15      
Minimum [Member]        
Debt Conversion [Line Items]        
Original due date   Jun. 01, 2033    
Maximum [Member]        
Debt Conversion [Line Items]        
Original due date   Sep. 10, 2058    
3.839% Notes Due 2060 [Member]        
Debt Conversion [Line Items]        
New debt $ 1,842      
New rate 3.839%      
New due date     Mar. 20, 2060