XML 87 R112.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Debt and Other Credit Facilities (Schedule of Debt Maturities) (Details) - Nonrecourse Project Finance Debt
$ in Millions
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]  
2020 $ 11
2021 5
2022 1
2023 1
2024 0
Beyond 2024 $ 0