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, 2020	Dec. 31, 2019	Dec. 31, 2018
Unconditional Purchase Obligation [Line Items]
Operating Leases, Rent Expense	$ 94	$ 95	$ 100
Loans and Mortgage-Related Securities [Abstract]
2020	189,259
2021	0
2022	0
2023	0
2024	0
Thereafter	0
Total	189,259
Operating Leases [Abstract]
2020	55
2021	66
2022	79
2023	81
2024	82
Thereafter	876
Total	1,239
Other [Abstract]
2020	130
2021	83
2022	85
2023	5
2024	0
Thereafter	0
Total	$ 303