Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Schedule Of Provision (Benefit) For Income Taxes

	Years Ended December 31,
	2011		2010		2009
Current:
Federal	$	48,068	$	18,085	$	14,571
State		11,969		7,412		4,008
Foreign		23,101		16,232		5,169
Deferred:
Federal and state		15,117		3,654		10,412
Foreign		2,039		3,716		(4,660	)
	$	100,294	$	49,099	$	29,500

Income Before Provision For Income Taxes

	Years Ended December 31,
	2011		2010		2009
Domestic	$	202,210	$	88,065	$	66,756
Foreign		48,006		27,103		7
	$	250,216	$	115,168	$	66,763

Schedule Of Statutory Federal Income Tax Rates

	Years Ended December 31,
	2011			2010			2009
Federal U.S. income tax rate		35.0	%		35.0	%		35.0	%
State income taxes, net of federal tax benefit		3.4			2.0			2.0
Tax-free interest income		—			—			(0.3	)
Non-deductible expenses		1.3			2.7			4.8
Non-U.S. income taxed at different rates, net of foreign tax credits		2.2			3.4			8.0
Federal tax credits		(1.2	)		(1.3	)		(2.5	)
Tax impact of uncertain tax positions		(0.4	)		0.2			(5.1	)
Other, net		(0.2	)		0.6			2.3
Effective tax rate		40.1	%		42.6	%		44.2	%

Deferred Portion Of Tax Provision (Benefit)

	Years Ended December 31,
	2011			2010			2009
Amortization of franchise rights	$	514		$	570		$	628
Amortization of other intangibles		1,142			961			535
Accrued expenses, deducted for tax when paid		(2,076	)		4,423			5,069
Capitalized costs for books, deducted for tax		7,448			4,693			6,809
Depreciation		(1,709	)		(951	)		(9,804	)
Federal impact of unrecognized tax benefits		331			(921	)		1,353
Foreign tax credit carryforwards		5,719			(5,719	)		5,434
Other, net		5,787			4,314			(4,272	)
	$	17,156		$	7,370		$	5,752

Deferred Income Tax Amounts Included In Consolidated Statements Of Financial Position

	December 31,
	2011			2010
Current deferred income tax assets, net	$	88,578		$	92,087
Long-term deferred income tax liabilities, net		(14,377	)		(1,379	)
	$	74,201		$	90,708

Components Of Deferred Income Tax Amounts

	December 31,
	2011			2010
Deferred Income Tax Assets
Provision for bad debts	$	7,123		$	7,299
Employee retirement and other benefit obligations		54,708			49,028
Workers' compensation		8,526			8,284
Deferred compensation		15,502			18,909
Credits and net operating loss carryforwards		42,289			47,847
Other		16,427			18,727
Total deferred income tax assets		144,575			150,094
Deferred Income Tax Liabilities
Amortization of intangible assets		(20,475	)		(18,819	)
Property and equipment basis differences		(8,823	)		(3,203	)
Other		(4,742	)		(6,381	)
Total deferred income tax liabilities		(34,040	)		(28,403	)
Valuation allowance		(36,334	)		(30,983	)
Total deferred income tax assets, net	$	74,201		$	90,708

Schedule Of Unrecognized Tax Benefits

	December 31,
	2011			2010			2009
Balance at beginning of period	$	12,505		$	13,135		$	20,485
Gross increases—tax positions in prior years		564			910			2,152
Gross decreases—tax positions in prior years		(1,061	)		(493	)		(6,592	)
Gross increases—tax positions in current year		40			64			130
Settlements		(111	)		(1,111	)		(3,040	)
Lapse of statute of limitations		(268	)		—			—
Balance at end of period	$	11,669		$	12,505		$	13,135