Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended		12 Months Ended
	Mar. 31, 2007	Feb. 28, 2002	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2002	Sep. 19, 2008 Trust	Dec. 05, 2002
Commitment And Contingencies [Line Items]
Settlement agreement pre-tax charge						$ 850
Charge covering a cash payment that will be required to make under Settlement agreement upon the effectiveness of an appropriate plan of reorganization						513
Percentage of annual interest that accrues on Settlement agreement charges from December 21 2002 to the date of payment			5.50%
Accrued interest compounded annually included in Settlement agreement and related accrued interest			364	319
Non - cash charges at fair value market						322
Original number of shares expect to be issued under Settlement agreement	9,000,000
Adjustment of company's common stock that is charged and expected to be issued under settlement agreement	To eighteen million shares due to our two-for-one stock split in March 2007
Original number of shares expected to be issued under Settlement agreement, adjusted	18,000,000
Amount per common share pre-split								$ 35.72
Amount per common share post-split								$ 17.86
Par value of common stock reserved for issuance related to the Settlement agreement	0.9
Excess of the aggregate fair value market over aggregated par value of common shares						321
Legal and related fees related to Settlement agreement						16
Establishment of asbestos trust under Section 524(g)							2
Voting Declaration with respect to the PI Settlement Plan			According to the Voting Declaration, with respect to each class of claims designated as impaired by Grace, the PI Settlement Plan has been approved by holders of at least two-thirds in amount and more than one-half in number (or for classes voting for purposes of Section 524(g) of the Bankruptcy Code, at least 75% in number) of voted claims
Minimum percentage of holders required to approve PI settlement under bankruptcy code			75.00%
Charges accrued for potential liabilities		172
Principal contractual obligations including agreements to purchase an estimated amount of goods, including raw materials, or services			313.8
Net rental expense			$ 84	$ 52	$ 35