Employee benefit plans

9 Months Ended

Sep. 30, 2020

Retirement Benefits [Abstract]

Employee benefit plans

Employee benefit plans

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
	Sept. 30, 2020						June 30, 2020						Sept. 30, 2019
(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	39		7		2		39		6		1		44		8		2
Expected return on assets	(80)		(10)		(2)		(79)		(9)		(2)		(84)		(11)		(1)
Other	22		2		(1)		21		3		—		13		—		(1)
Net periodic benefit (credit) cost	$	(19)	$	2	$	(1)	$	(19)	$	3	$	(1)	$	(27)	$	—	$	—

Net periodic benefit (credit) cost	Year-to-date
	Sept. 30, 2020						Sept. 30, 2019
(in millions)	Domestic pension benefits		Foreign pension benefits		Health care benefits		Domestic pension benefits		Foreign pension benefits		Health care benefits
Service cost	$	—	$	9	$	—	$	—	$	9	$	—
Interest cost	117		20		4		133		24		5
Expected return on assets	(239)		(29)		(5)		(252)		(34)		(5)
Other	65		8		(2)		39		1		(2)
Net periodic benefit (credit) cost	$	(57)	$	8	$	(3)	$	(80)	$	—	$	(2)