XML 39 R66.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Commercial Paper and Long-term Debt (Adjustments and payments to the Principal Amounts of Long-term Debt) (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Long-term Debt [Line Items]    
Principal $ 4,792,000,000 $ 4,792,000,000
Unamortized issue discounts (26,000,000) (30,000,000)
Unamortized interest rate lock costs (6,000,000) (7,000,000)
Total 4,760,000,000 $ 4,755,000,000
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 1,500,000,000  
Long-term Debt, Maturities, Repayments of Principal in Year Two 0  
Long-term Debt, Maturities, Repayments of Principal in Year Three 1,100,000,000  
Long-term Debt, Maturities, Repayments of Principal in Year Four 0  
Long-term Debt, Maturities, Repayments of Principal in Year Five 300,000,000  
Long-term Debt, Maturities, Repayments of Principal after Year Five $ 1,892,000,000