Asbestos-Related Litigation (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended				3 Months Ended		12 Months Ended	1 Months Ended	3 Months Ended		24 Months Ended	12 Months Ended	24 Months Ended	3 Months Ended	4 Months Ended
	Mar. 31, 2003 claim	Mar. 31, 2012 insurer	Dec. 31, 2011	Apr. 02, 2001 lawsuit	Mar. 31, 2012 Zonolite Attic Insulation ("ZAI") lawsuit	Mar. 31, 2012 Asbestos-Related Litigation	Dec. 31, 2011 Asbestos-Related Litigation	Mar. 31, 2003 Property Damage Litigation claim	Mar. 31, 2012 Property Damage Litigation lawsuit claim	Apr. 02, 2001 Property Damage Litigation claim lawsuit	Dec. 31, 2001 Property Damage Litigation Zonolite Attic Insulation ("ZAI") lawsuit	Dec. 31, 2009 Property Damage Litigation Zonolite Attic Insulation ("ZAI") Canada claim	Dec. 31, 2005 Property Damage Litigation Zonolite Attic Insulation ("ZAI") Canada lawsuit	Mar. 31, 2012 Property Damage Litigation Zonolite Attic Insulation ("ZAI") United States (U.S.) claim	Oct. 31, 2008 Property Damage Litigation Zonolite Attic Insulation ("ZAI") United States (U.S.) claim	Apr. 02, 2001 Personal Injury Litigation claim
Asbestos contingencies
Number of pending lawsuits				65,656	8				16
Number of pending claims										17						129,191
Number of settled and dismissed claims									1
Number of lawsuits filed prior to the filing date										380
Number of lawsuits related to former asbestos containing products					2				8
Number of additional bankruptcy claims filed								4,300						1,310
Number of bankruptcy claims outstanding									430
Number of bankruptcy claims settled									410
Amount of bankruptcy claims settled									$ 151,600,000
Number of purported class action lawsuits											8		10
Asbestos-Related Liability
Asbestos-related contingencies		1,700,000,000	1,700,000,000
Asbestos related liability, amount available for post-petition settlements and judgments settlement claims						1,613,000,000
Asbestos related liability, amount available for prepetition settlements and judgments settlement claims						87,000,000
Number of warrants issued by entity to fund trust (in shares)						10
Exercise price of warrant (in dollars per share)						$ 17.00
Warrant value						383,000,000	272,000,000
Deferred payment obligation per year for five years beginning January 2, 2019						110,000,000
Deferred payment obligation per year for ten years beginning January 2, 2024						100,000,000
Estimated deferred payment obligation						398,000,000	365,000,000
Asbestos related liability, amount available for claim settlement						1,700,000,000	1,700,000,000
Insurance Rights
Maximum aggregate amount receivable under settlement agreements		487,000,000
Excess coverage amount with no agreements with insurers		483,000,000
Excess coverage with insolvent or non-paying insurance carriers		253,000,000
Amount agreed by the insurers, to be paid to the PI trust in respect of claims for which the company was provided coverage under the affected policies		393,200,000
Remaining excess coverage available from solvent insurers		970,000,000
Number of solvent insurers		54
Minimum estimated eligible claims to access total coverage		4,000,000,000
Minimum fund claim payments		2,000,000,000
Estimated insurance recoveries		$ 500,000,000
Number of bankruptcy claims filed	14,900											13,100			17,960