OTHER REGULATORY MATTERS (Tables)

12 Months Ended

Dec. 31, 2021

BankingRegulation [Abstract]

Period-end capital amounts and capital ratios

		Minimum		Minimum				Basel III
		Regulatory		Ratio+Capital		Well-		December 31,
		Capital		Conservation		Capitalized		2021				2020
(dollar amounts in millions)		Ratios		Buffer (1)		Minimums		Ratio		Amount		Ratio		Amount
CET 1 risk-based capital	Consolidated	4.50	%	7.00	%	N/A		9.33	%	$	12,249	10.00	%	$	8,887
	Bank	4.50		7.00		6.50	%	10.15		13,261		10.65		9,438
Tier 1 risk-based capital	Consolidated	6.00		8.50		6.00		10.99		14,426		12.47		11,083
	Bank	6.00		8.50		8.00		11.06		14,445		11.97		10,601
Total risk-based capital	Consolidated	8.00		10.50		10.00		13.14		17,246		14.46		12,856
	Bank	8.00		10.50		10.00		12.58		16,427		13.58		12,032
Tier 1 leverage	Consolidated	4.00		N/A		N/A		8.56		14,426		9.32		9,854
	Bank	4.00		N/A		5.00		8.60		14,445		8.94		10,601