Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Non Cancelable Future Commitments by Remaining Maturity [Table Text Block]

The following table summarizes by remaining maturity, non-cancelable future commitments related to loan and mortgage purchases, operating leases and other agreements.

	As of December 31, 2020
	Loans and Mortgage-Related Securities(1)		Operating Leases(2)		Other(3)
	(Dollars in millions)
2021	$	189,259	$	55	$	130
2022	—		66		83
2023	—		79		85
2024	—		81		5
2025	—		82		—
Thereafter	—		876		—
Total	$	189,259	$	1,239	$	303

(1)Primarily includes mortgage commitment derivatives.

(2)Includes amounts related to office buildings and equipment leases.

(3)Includes purchase commitments for certain telecommunications services, computer software and services, and other agreements and commitments.