Employee Benefits Schedule of Other information related to Company's other post-retirement plan's (Details) (U.S. and Canadian Other Post-Retirement Benefits [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit cost recognized (millions)	$ 4	$ 1	$ 6
Minimum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	4.44%	3.67%	4.33%
Discount rate	3.67%	4.33%	4.92%
Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	4.95%	4.00%	5.00%
Discount rate	4.00%	5.00%	6.00%