Pension and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2016

HSBC North America Pension Plan [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]

Components of Net Periodic Benefit Cost

The components of pension expense for the defined benefit pension plan recorded in our consolidated statement of income and shown in the table below reflect the portion of pension expense of the combined HSBC North America Pension Plan (either the "HSBC North America Pension Plan" or the "Plan") which has been allocated to us.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
	(in millions)
Interest cost on projected benefit obligation	$	18		$	18		$	53		$	51
Expected return on plan assets	(21		)	(22		)	(63		)	(68		)
Amortization of net actuarial loss	13			10			32			29
Administrative costs	1			2			4			5
Pension expense	$	11		$	8		$	26		$	17

Postretirement Plans Other Than Pensions [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost for our postretirement plans other than pension are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
	(in millions)
Interest cost on accumulated benefit obligation	$	1	$	1	$	2	$	2
Net periodic postretirement benefit cost	$	1	$	1	$	2	$	2