Summary of Significant Accounting Policies (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Identifiable intangible assets
Gross	$ 360	$ 360	$ 364
Accumulated Amortization	(49)	(49)	(35)
Net	311	311	329
Weighted Average Useful Life		19 years	19 years
Amortization expense		14	14	14
Impairment of goodwill and other indefinite-lived intangible assets	0
Hedging instruments
Maximum term over which the company hedges exposures to the variability of cash flows for commodity price risk		24 months
Earnings per common share
Weighted average number of shares outstanding, basic		77.0	76.5	76.4
Weighted average number of shares outstanding, diluted		78.3	78.2	78.2
Antidilutive securities excluded from computation of earnings per share amount		0.4	0.9	0.4
Expected intangible amortization expense for subsequent years
2014	14	14
2015	14	14
2016	14	14
2017	14	14
2018	14	14
Trademarks / tradenames
Identifiable intangible assets
Gross	132	132	132
Net	132	132	132
Customer relationships
Identifiable intangible assets
Gross	139	139	143
Accumulated Amortization	(18)	(18)	(13)
Net	121	121	130
Weighted Average Useful Life		25 years	25 years
Technology
Identifiable intangible assets
Gross	83	83	83
Accumulated Amortization	(27)	(27)	(19)
Net	56	56	64
Weighted Average Useful Life		10 years	10 years
Other
Identifiable intangible assets
Gross	6	6	6
Accumulated Amortization	(4)	(4)	(3)
Net	$ 2	$ 2	$ 3
Weighted Average Useful Life		8 years	8 years