Supplemental Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2011

Supplemental Balance Sheet Information [Abstract]

Inventories

(millions)	2011		2010
Finished goods and work in progress	$	239	$	227
Raw materials		66		63
Total	$	305	$	290

Property, plant and equipment

(millions)	2011			2010
Land and mineral deposits	$	119		$	115
Buildings and improvements		1,106			1,129
Machinery and equipment		2,529			2,568
		3,754			3,812
Reserves for depreciation and depletion		(1,637	)		(1,546	)
Total	$	2,117		$	2,266
Annual depreciation and depletion expense	$	144		$	160

Accrued expenses

(millions)	2011		2010
Self-insurance reserves	$	49	$	50
Employee compensation		41		39
Interest		52		49
Restructuring		13		35
Derivatives		8		19
Other		103		102
Total	$	266	$	294

Accumulated other comprehensive income (loss)

(millions)	2011			2010
Unrecognized loss on pension and postretirement benefit plans, net of tax	$	(221	)	$	(106	)
Derivatives, net of tax		28			8
Foreign currency translation, net of tax		19			48
Total	$	(174	)	$	(50	)

Reclassifications of net after-tax gains or losses from AOCI to earnings

(millions)	2011			2010			2009
Loss on derivatives, net of tax	$	(20	)	$	(20	)	$	(69	)
(Loss) gain on unrecognized pension and postretirement benefit costs, net of tax		(2	)		2			9
Total	$	(22	)	$	(18	)	$	(60	)

Changes in the liability for asset retirement obligations

(millions)	2011			2010
Balance as of January 1	$	103		$	101
Accretion expense		7			6
Liabilities incurred/adjusted		7			(2	)
Liabilities settled		(1	)		(1	)
Asset retirements		(1	)		(2	)
Foreign currency translation		(1	)		1
Balance as of December 31	$	114		$	103