Describes each unconditional purchase obligation (recorded and unrecorded) arrangement to purchase goods and services that extend over multiple periods, any assets pledged to secure payment, and the fixed or determinable amount of payments due in each of the next five years and thereafter. Also includes contractual obligations.

No definition available.

Commitments and Contingencies Fiscal Year Maturity Schedule (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Unconditional Purchase Obligation [Line Items]
Operating Leases, Rent Expense	$ 95	$ 100	$ 61
Loans and Mortgage-Related Securities [Abstract]
2020	74,283
2021	0
2022	0
2023	0
2024	0
Thereafter	0
Total	74,283
Operating Leases [Abstract]
2020	59
2021	55
2022	56
2023	49
2024	50
Thereafter	475
Total	744
Other [Abstract]
2020	109
2021	40
2022	6
2023	0
2024	0
Thereafter	0
Total	155
Mortgage commitment derivatives
Loans and Mortgage-Related Securities [Abstract]
Total	$ 74,000