Pension plans (Tables)

12 Months Ended

Dec. 31, 2014

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 accrued pension liability (included in Accounts payable, accrued expenses, and other liabilities in the consolidated balance sheets):

	December 31		December 31
(in millions of U.S dollars)	2014		2013
Fair value of plan assets	$	588	$	566
Projected benefit obligation	594		591
Accrued pension liability	$	6	$	25

Schedule of expected future benefit payments

Expected future payments are as follows:

For the year ending December 31
(in millions of U.S dollars)
2015	$	28
2016	21
2017	22
2018	25
2019	27
2020–2024	135