Retained Earnings and Regulatory Capital Requirements (Tables)

3 Months Ended

Mar. 31, 2022

Retained Earnings Note Disclosure [Abstract]

Capital Amounts and Ratios in Accordance With Current Banking Regulations

The following table summarizes the capital amounts and ratios of HSBC USA and HSBC Bank USA, calculated in accordance with the Basel III rule at March 31, 2022 and December 31, 2021:

	March 31, 2022							December 31, 2021
	Capital Amount		Well-Capitalized  Ratio(1)			Actual Ratio		Capital Amount		Well-Capitalized Ratio(1)			Actual Ratio
	(dollars are in millions)
Common equity Tier 1 ratio:
HSBC USA	$	15,680	4.5	%	(2)	15.1	%	$	15,341	4.5	%	(2)	15.1	%
HSBC Bank USA	18,010		6.5			17.7		17,665		6.5			17.6
Tier 1 capital ratio:
HSBC USA	16,945		6.0			16.3		16,606		6.0			16.3
HSBC Bank USA	20,510		8.0			20.1		20,165		8.0			20.1
Total capital ratio:
HSBC USA	19,162		10.0			18.5		18,821		10.0			18.5
HSBC Bank USA	22,502		10.0			22.1		22,157		10.0			22.1
Tier 1 leverage ratio:
HSBC USA	16,945		4.0		(2)	9.2		16,606		4.0		(2)	8.5
HSBC Bank USA	20,510		5.0			11.3		20,165		5.0			10.5
Risk-weighted assets:(3)
HSBC USA	103,826							101,827
HSBC Bank USA	101,991							100,363
Adjusted quarterly average assets:(4)
HSBC USA	183,389							194,469
HSBC Bank USA	181,194							192,521

(1)HSBC USA and HSBC Bank USA are categorized as "well-capitalized," as defined by their principal regulators. To be categorized as well-capitalized under regulatory guidelines, a banking institution must maintain capital equal to or in excess of the ratios reflected in the above table, and must not be subject to a directive, order, or written agreement to meet and maintain specific capital levels.

(2)There are no common equity Tier 1 or Tier 1 leverage ratio components in the definition of a well-capitalized bank holding company. The ratios shown are the regulatory minimums.

(3)Calculated using the generally-applicable Standardized Approach.

(4)Represents the Tier 1 leverage ratio denominator which reflects quarterly average assets adjusted for amounts permitted to be deducted from Tier 1 capital.