Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Notes To Financial Statements [Abstract]

Presents the carrying amounts and estimated fair values of the Company's financial instruments for which the carrying values on the Consolidated Balance Sheet are different from their fair values

The following table provides the carrying amounts and estimated fair values of the Company's financial instruments as at December 31, 2014 and December 31,2013 for which the carrying values on the Consolidated Balance Sheet are different from their fair values:

In millions		December 31, 2014				December 31, 2013
		Carrying		Fair		Carrying		Fair
		amount		value		amount		value
Financial assets
Investments (Note 8)	$	58	$	183	$	57	$	164
Financial liabilities
Total debt (Note 10)	$	8,409	$	9,767	$	7,840	$	8,683