Asbestos-Related Litigation (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended				9 Months Ended	12 Months Ended			1 Months Ended	9 Months Ended		9 Months Ended	24 Months Ended	12 Months Ended	24 Months Ended	4 Months Ended	9 Months Ended
	Mar. 31, 2003 claim	Sep. 30, 2012 claim insurer	Dec. 31, 2011	Apr. 02, 2001 lawsuit	Sep. 30, 2012 Asbestos-Related Litigation	Dec. 31, 2011 Asbestos-Related Litigation	Sep. 30, 2012 Asbestos-Related Litigation Low	Sep. 30, 2012 Asbestos-Related Litigation High	Mar. 31, 2003 Property Damage Litigation claim	Sep. 30, 2012 Property Damage Litigation claim item lawsuit	Apr. 02, 2001 Property Damage Litigation lawsuit	Sep. 30, 2012 Property Damage Litigation Zonolite Attic Insulation ("ZAI") 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	Oct. 31, 2008 Property Damage Litigation Zonolite Attic Insulation ("ZAI") United States (U.S.) claim	Sep. 30, 2012 Property Damage Litigation Zonolite Attic Insulation ("ZAI") United States (U.S.) item	Apr. 02, 2001 Personal Injury Litigation claim
Asbestos contingencies
Number of pending lawsuits				65,656						16	17	8
Number of pending claims																		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										8		2
Number of additional bankruptcy claims filed									4,400								1,310
Number of bankruptcy claims outstanding		5								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 liability, amount available for post-petition settlements and judgements settlement claims					1,613,000,000
Asbestos related liability, amount available for prepetition settlements and judgements 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					395,000,000	272,000,000
Settlement of warrant at cash value							375,000,000	490,000,000
Grace consideration to PI Trust		1,700,000,000	1,700,000,000
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					472,000,000	365,000,000
Expected increase in the amount of recorded liability for Asbestos							375,000,000	475,000,000
Asbestos related liability, amount available for claim settlement					1,700,000,000
Insurance Rights
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
Maximum aggregate amount available 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
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