Regulatory Capital (Tables)

12 Months Ended

Dec. 31, 2019

Banking and Thrift [Abstract]

Schedule of compliance with regulatory capital requirements

The following capital amounts and ratios are based upon the Bank’s average assets and risk-weighted assets, as indicated.

	Actual				U.S. Basel III Minimum Requirements Plus Buffer(1)(2)
	Amount		Ratio		Amount			Ratio
As of December 31, 2019:
Common Equity Tier 1 Capital (to Risk-Weighted Assets)	$	3,264,309	12.2	%	$	1,876,050	>	7.0	%
Tier 1 Capital (to Risk-Weighted Assets)	$	3,264,309	12.2	%	$	2,278,060	>	8.5	%
Total Capital (to Risk-Weighted Assets)	$	3,600,668	13.4	%	$	2,814,074	>	10.5	%
Tier 1 Capital (to Average Assets)	$	3,264,309	10.2	%	$	1,282,642	>	4.0	%
As of December 31, 2018:
Common Equity Tier 1 Capital (to Risk-Weighted Assets)	$	2,896,091	12.1	%	$	1,528,209	>	6.375	%
Tier 1 Capital (to Risk-Weighted Assets)	$	2,896,091	12.1	%	$	1,887,787	>	7.875	%
Total Capital (to Risk-Weighted Assets)	$	3,196,279	13.3	%	$	2,367,226	>	9.875	%
Tier 1 Capital (to Average Assets)	$	2,896,091	11.1	%	$	1,039,226	>	4.0	%