Regulatory Capital Requirements and Dividends From Subsidiaries (Tables)

12 Months Ended

Dec. 31, 2021

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

Schedule of Compliance with Regulatory Capital Requirements

The following table includes the Basel III requirements for regulatory capital ratios.

	Basel III Minimums		Basel III Conservation Buffers		Basel III Requirements
Regulatory capital ratios
Total risk-based capital	8.00	%	2.50	%	10.50	%
Tier 1 risk-based capital	6.00		2.50		8.50
Common equity Tier 1	4.50		2.50		7.00
Tier 1 leverage	4.00		—		4.00

The regulatory capital ratios for BancShares and FCB exceed the Basel III requirements and the PCA well-capitalized thresholds as of December 31, 2021 and 2020 as summarized in the following table.

					December 31, 2021				December 31, 2020
(Dollars in thousands)	Basel III Requirements		PCA well-capitalized thresholds		Amount		Ratio		Amount		Ratio
BancShares
Total risk-based capital	10.50	%	10.00	%	$	5,041,686	14.35	%	$	4,577,212	13.81	%
Tier 1 risk-based capital	8.50		8.00		4,380,452		12.47		3,856,086		11.63
Common equity Tier 1	7.00		6.50		4,040,515		11.50		3,516,149		10.61
Tier 1 leverage	4.00		5.00		4,380,452		7.59		3,856,086		7.86
FCB
Total risk-based capital	10.50	%	10.00		4,857,960		13.85		4,543,496		13.72
Tier 1 risk-based capital	8.50		8.00		4,651,226		13.26		4,276,870		12.92
Common equity Tier 1	7.00		6.50		4,651,226		13.26		4,276,870		12.92
Tier 1 leverage	4.00		5.00		4,651,226		8.07		4,276,870		8.72