Postretirement benefits (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The components of net pension and other postretirement benefit costs (benefits) reflected in Net income (loss) in the Consolidated statements of operations were as follows:

	Pension Benefit Plans								Other Postretirement Benefit Plans
	2020				2019				2020		2019
Three Months Ended June 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	1	$	13	$	2	$	—	$	—
Non-service cost:
Interest cost	25		5		29		7		—		1
Expected return on plan assets	(56)		(11)		(48)		(11)		(1)		(1)
Amortization of net actuarial loss	—		1		—		1		—		—
Amortization of prior service cost	—		—		—		—		(20)		(20)
Settlements	1		—		—		—		—		—
Total non-service (benefit) cost	(30)		(5)		(19)		(3)		(21)		(20)
Net periodic (benefit) cost	$	(30)	$	(4)	$	(6)	$	(1)	$	(21)	$	(20)

	Pension Benefit Plans								Other Postretirement Benefit Plans
	2020				2019				2020		2019
Six Months Ended June 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	2	$	25	$	5	$	—	$	—
Non-service cost:
Interest cost	50		11		59		14		1		2
Expected return on plan assets	(112)		(21)		(95)		(22)		(2)		(2)
Amortization of net actuarial loss	—		1		—		1		—		—
Amortization of prior service cost	—		—		—		—		(40)		(40)
Settlements	2		—		—		—		—		—
Total non-service (benefit) cost	(60)		(9)		(36)		(7)		(41)		(40)
Net periodic (benefit) cost	$	(60)	$	(7)	$	(11)	$	(2)	$	(41)	$	(40)

The line items in which the service and non-service cost components of net periodic (benefit) cost are included in the Consolidated statements of operations were as follows:

	Pension Benefit Plans				Other Postretirement Benefit Plans
Three Months Ended June 30	2020		2019		2020		2019
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	1	$	—	$	—
Administrative expenses	1		14		—		—
Total service cost	1		15		—		—
Non-service cost:
Losses and loss expenses	(3)		(2)		(2)		(2)
Administrative expenses	(32)		(20)		(19)		(18)
Total non-service (benefit) cost	(35)		(22)		(21)		(20)
Net periodic (benefit) cost	$	(34)	$	(7)	$	(21)	$	(20)

	Pension Benefit Plans				Other Postretirement Benefit Plans
Six Months Ended June 30	2020		2019		2020		2019
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	3	$	—	$	—
Administrative expenses	2		27		—		—
Total service cost	2		30		—		—
Non-service cost:
Losses and loss expenses	(6)		(4)		(4)		(4)
Administrative expenses	(63)		(39)		(37)		(36)
Total non-service (benefit) cost	(69)		(43)		(41)		(40)
Net periodic (benefit) cost	$	(67)	$	(13)	$	(41)	$	(40)