Commitments and Contingencies - Additional Information (Details) (USD $) In Millions, unless otherwise specified				3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Minimum [Member]	Mar. 31, 2014 Asbestos [Member] claim	Dec. 31, 2013 Asbestos [Member] claim	Mar. 31, 2014 Environmental Liability [Member]	Dec. 31, 2013 Environmental Liability [Member]	Mar. 31, 2010 Structural Products [Member] Lease
Commitments and Contingencies Disclosure [Line Items]
Asbestos claims pending				25,000	25,000
Asbestos claims settled and awaiting final documentation and dismissal, with or without payment				1,000
Asbestos claims accrued				$ 85	$ 88
Time horizon used to estimate liability				15 years
Probable recovery receivable				53	55		1
Approval Amount For Dividends And Other Distributions			1
Other product liabilities, non-asbestos	1	1
Accrued environmental liabilities						8	9
Guarantee of lease obligations, number of leases assigned (in leases)								3
Guarantee Obligations Other Contracts								$ 6