Regulatory Requirements and Matters (Tables)

12 Months Ended

Dec. 31, 2025

Banking and Thrift, Interest [Abstract]

Schedule of Regulatory Capital Information

The following table presents the regulatory capital information of the Company and the Bank as of December 31, 2025 and 2024:

	Basel III
	December 31, 2025				December 31, 2024 (1)
($ in thousands)	Amount		Ratio		Amount		Ratio		Minimum Regulatory Requirements		Minimum Regulatory Requirements including Capital Conservation Buffer (3)		Well-Capitalized Requirement
Total capital (to risk-weighted assets)
Company	$	9,480,208	16.4	%	$	8,561,797	15.6	%	8.0	%	10.5	%	10.0	%
East West Bank	$	8,694,701	15.1	%	$	8,053,389	14.7	%	8.0	%	10.5	%	10.0	%
Tier 1 capital (to risk-weighted assets)
Company	$	8,721,523	15.1	%	$	7,839,816	14.3	%	6.0	%	8.5	%	6.0	%
East West Bank	$	7,973,536	13.9	%	$	7,367,996	13.4	%	6.0	%	8.5	%	8.0	%
CET1 capital (to risk-weighted assets)
Company (2)	$	8,721,523	15.1	%	$	7,839,816	14.3	%	4.5	%	7.0	%	N/A
East West Bank	$	7,973,536	13.9	%	$	7,367,996	13.4	%	4.5	%	7.0	%	6.5	%
Tier 1 leverage capital (to adjusted quarterly average assets)
Company (2)	$	8,721,523	10.9	%	$	7,839,816	10.4	%	4.0	%	4.0	%	N/A
East West Bank	$	7,973,536	10.0	%	$	7,367,996	9.8	%	4.0	%	4.0	%	5.0	%

N/A — Not applicable.

(1)Reflected a delay of the estimated impact of CECL on regulatory capital in accordance with regulatory capital rules.

(2)The well-capitalized requirements for CET1 capital and Tier 1 leverage capital apply only to the Bank since there is no CET1 capital ratio or Tier 1 leverage capital ratio component in the definition of a well-capitalized bank holding company.

(3)Includes a 2.5% capital conservation buffer requirement above the minimum risk-based capital ratios, where applicable.