Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2021

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

Summary of Actual Capital Amounts and Capital Ratios

Our capital amounts and ratios under Basel III at December 31, 2021 and 2020 are as follows:

(Dollar amounts in millions)	December 31, 2021				To be well-capitalized
	Amount		Ratio		Amount		Ratio
Basel III Regulatory Capital Amounts and Ratios
Total capital (to risk-weighted assets)	$	7,652	12.8	%	$	5,960	10.0	%
Tier 1 capital (to risk-weighted assets)	6,508		10.9		4,768		8.0
Common equity tier 1 capital (to risk-weighted assets)	6,068		10.2		3,874		6.5
Tier 1 capital (to average assets) - leverage ratio	6,508		7.2		4,546		5.0

	December 31, 2020				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)	$	7,862	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) - leverage ratio	6,579		8.3		3,944		5.0

The schedule below presents our 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, 2021
	Capital ratio		Minimum capital requirement		Capital conservation buffer ratio		Capital ratio in excess of minimum capital ratio plus capital conservation buffer requirement
Total capital (to risk-weighted assets)	12.8	%	8.0	%	2.5	%	2.3	%
Tier 1 capital (to risk-weighted assets)	10.9		6.0		2.5		2.4
Common equity tier 1 capital (to risk-weighted assets)	10.2		4.5		2.5		3.2