Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2020

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Summary of Actual Capital Amounts and Capital Ratios

Our capital amounts and ratios at December 31, 2020 and 2019 under Basel III are as follows:

(Dollar amounts in millions)	December 31, 2020				To be well-capitalized
	Amount		Ratio		Amount		Ratio
Basel III Regulatory Capital Amounts and Ratios
Total capital (to risk-weighted assets)	$	7,862	14.1	%	$	5,587	10.0	%
Tier 1 capital (to risk-weighted assets)	6,579		11.8		4,469		8.0
Common equity tier 1 capital (to risk-weighted assets)	6,013		10.8		3,631		6.5
Tier 1 capital (to average assets)	6,579		8.3		3,944		5.0

	December 31, 2019				To be well-capitalized
(Dollar amounts in millions)	Amount		Ratio		Amount		Ratio
Basel III Regulatory Capital Amounts and Ratios
Total capital (to risk-weighted assets)	$	7,411	13.2	%	$	5,604	10.0	%
Tier 1 capital (to risk-weighted assets)	6,285		11.2		4,483		8.0
Common equity tier 1 capital (to risk-weighted assets)	5,719		10.2		3,643		6.5
Tier 1 capital (to average assets)	6,285		9.2		3,426		5.0

The schedule below presents our actual capital ratios in comparison to minimum capital ratios and capital ratios in excess of minimum capital requirements plus minimum capital conservation buffer requirements.

	December 31, 2020
	Actual Capital Ratio		Minimum Capital Ratio		Capital Conservation Buffer Ratio		Capital Ratio in Excess of Minimum Capital Ratio plus Capital Conservation Buffer Requirement
Total capital (to risk-weighted assets)	14.1	%	8.0	%	2.5	%	3.6	%
Tier 1 capital (to risk-weighted assets)	11.8		6.0		2.5		3.3
Common equity tier 1 capital (to risk-weighted assets)	10.8		4.5		2.5		3.8