Major commitments and contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Loss Contingencies [Line Items]

Minimum rental payments for operating leases and minimum lease payments for capital leases in each of the next five years and thereafter [Text Block]

In millions			Operating		Capital
2016		$	169	$	245
2017			138		186
2018			113		17
2019			82		17
2020			53		23
2021 and thereafter			187		152
Total		$	742		640
Less:	Imputed interest on capital leases at rates ranging from approximately 0.7% to 7.3%				118
Present value of minimum lease payments included in debt (Note 10)				$	522

Provision for specific environmental sites [Text Block]

As at December 31, 2015, 2014 and 2013, the Company’s provision for specific environmental sites was as follows:

In millions		2015		2014		2013
Beginning of year	$	114	$	119	$	123
Accruals and other		81		11		12
Payments		(91)		(19)		(18)
Foreign exchange		6		3		2
End of year	$	110	$	114	$	119
Current portion - End of year	$	51	$	45	$	41

Employee injuries, Canada

Loss Contingencies [Line Items]

Contingencies, employee injuries [Text Block]

As at December 31, 2015, 2014 and 2013, the Company’s provision for personal injury and other claims in Canada was as follows:

In millions		2015		2014		2013
Beginning of year	$	203	$	210	$	209
Accruals and other		17		28		38
Payments		(29)		(35)		(37)
End of year	$	191	$	203	$	210
Current portion - End of year	$	27	$	28	$	31

Employee injuries, United States

Loss Contingencies [Line Items]

Contingencies, employee injuries [Text Block]

As at December 31, 2015, 2014 and 2013, the Company’s provision for personal injury and other claims in the U.S. was asfollows:

In millions		2015		2014		2013
Beginning of year	$	95	$	106	$	105
Accruals and other		22		2		18
Payments		(30)		(22)		(24)
Foreign exchange		18		9		7
End of year	$	105	$	95	$	106
Current portion - End of year	$	24	$	20	$	14