Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes

Schedule of components of the provision for income taxes attributable to operations

	Year Ended December 31,
	2012			2011			2010
	(in millions)
Current:
Federal	$	159.1		$	153.1		$	40.3
State		26.5			22.1			12.2
Foreign		12.7			14.4			3.4
		198.3			189.6			55.9
Deferred:
Federal		2.5			(24.1	)		34.0
State		0.5			(2.3	)		7.9
Foreign		(0.2	)		(0.8	)		0.8
		2.8			(27.2	)		42.7
	$	201.1		$	162.4		$	98.6

Components of U.S. and international income before income taxes

	Year Ended December 31,
	2012		2011		2010
	(in millions)
U.S.	$	551.6	$	452.0	$	275.8
International		57.8		59.6		20.7
Income before income taxes	$	609.4	$	511.6	$	296.5

Schedule of reconciliation of income tax at the U.S. federal statutory tax rates to income tax expense

	Year Ended December 31,
	2012			2011			2010
Income tax at U.S. federal statutory tax rate		35.0	%		35.0	%		35.0	%
State income tax, net of federal tax effect		2.9			2.4			3.9
Net effect of life insurance policies		(2.2	)		(2.3	)		(2.6	)
Net effect of changes in unrecognized tax benefits		—			—			(0.1	)
Domestic production activity deduction		(1.2	)		(1.5	)		(1.2	)
Other, net		(1.5	)		(1.9	)		(1.7	)
Effective tax rate		33.0	%		31.7	%		33.3	%

Schedule of components of the Company's deferred tax assets and liabilities

	December 31,
	2012			2011
	(in millions)
Deferred tax assets:
Accrued expenses not currently deductible for tax	$	66.9		$	45.7
Inventory costs capitalized for tax purposes		25.8			24.7
Share-based compensation		21.1			20.2
Allowance for doubtful accounts		7.8			9.3
Tax credits carryforwards		1.1			1.1
Net operating loss carryforwards		3.4			3.1
Other		3.5			3.9
Total deferred tax assets		129.6			108.0
Deferred tax liabilities:
Property, plant and equipment, net		(165.9	)		(154.1	)
Goodwill and other intangible assets		(360.9	)		(342.9	)
LIFO inventories		(38.6	)		(17.5	)
Total deferred tax liabilities		(565.4	)		(514.5	)
Net deferred tax liabilities	$	(435.8	)	$	(406.5	)

Schedule of reconciliation of the beginning and ending balances of the total amounts of unrecognized tax benefits

	Year Ended December 31,
	2012			2011			2010
	(in millions)
Unrecognized tax benefits at January 1	$	16.1		$	15.4		$	15.5
Increases in tax positions for prior years		0.6			1.3			0.3
Decreases in tax positions for prior years		—			(0.2	)		(0.9	)
Increases in tax positions for current year		4.1			3.7			3.0
Settlements		(1.1	)		(0.1	)		(0.3	)
Lapses in statutes-of-limitation periods		(3.8	)		(4.0	)		(2.2	)
Unrecognized tax benefits at December 31	$	15.9		$	16.1		$	15.4