Employee benefit plans (Tables)

6 Months Ended

Jun. 30, 2022

Retirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures

The components of net periodic benefit (credit) cost are presented below. The service cost component is reflected in staff expense, whereas the remaining components are reflected in other expense.

Net periodic benefit (credit) cost	Quarter ended
	June 30, 2022						March 31, 2022						June 30, 2021
(in millions)	Domestic pension benefits		Foreign pension benefits		Health care benefits		Domestic pension benefits		Foreign pension benefits		Health care benefits		Domestic pension benefits		Foreign pension benefits		Health care benefits
Service cost	$	—	$	3	$	—	$	—	$	3	$	—	$	—	$	3	$	—
Interest cost	35		7		1		35		8		1		34		7		1
Expected return on assets	(78)		(9)		(1)		(78)		(10)		(2)		(75)		(8)		(1)
Other	17		1		(1)		17		1		(1)		24		3		—
Net periodic benefit (credit) cost	$	(26)	$	2	$	(1)	$	(26)	$	2	$	(2)	$	(17)	$	5	$	—

Net periodic benefit (credit) cost	Year-to-date
	June 30, 2022						June 30, 2021
(in millions)	Domestic pension benefits		Foreign pension benefits		Health care benefits		Domestic pension benefits		Foreign pension benefits		Health care benefits
Service cost	$	—	$	6	$	—	$	—	$	7	$	—
Interest cost	70		15		2		68		13		2
Expected return on assets	(156)		(19)		(3)		(150)		(17)		(3)
Other	34		2		(2)		49		7		—
Net periodic benefit (credit) cost	$	(52)	$	4	$	(3)	$	(33)	$	10	$	(1)