Pension plans (Tables)

12 Months Ended

Dec. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]

Components of the funded status of the pensions (included in Accounts payable, accrued expenses, and other liabilities in the consolidated balance sheets):

	December 31		December 31
(in millions of U.S. dollars)	2015		2014
Fair value of plan assets	$	573	$	588
Projected benefit obligation	569		594
Funded status, end of year	$	4	$	(6	)

Schedule of expected future benefit payments

Expected future payments are as follows:

For the year ending December 31
(in millions of U.S. dollars)
2016	$	20
2017	20
2018	23
2019	24
2020	24
2021–2025	126