CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock, at cost	Comprehensive Income	Noncontrolling Interests	Total
Balance at Dec. 31, 2009	$ 2,141	$ 2,302,368	$ 3,216,639	$ (20,961)	$ (1,510,548)		$ 21,825	$ 4,011,464
Balance at Dec. 31, 2009	183,293
Net income			357,063			357,063	17,966	375,029
Currency translation				(33,186)		(33,186)		(33,186)
Market valuation, net of tax (expense) benefit				5,555		5,555		5,555
Net deferred loss on cash flow hedges				362		362		362
Comprehensive income						329,794
Dividends declared			(35,844)					(35,844)
Distributions to noncontrolling interests							(16,830)	(16,830)
Issuance of common stock under benefit plans	2	(24,377)			34,618			10,243
Issuance of common stock under benefit plans, shares	869
Stock-based compensation expense		26,768			1,807			28,575
Exercise of stock options		(11,081)			51,255			40,174
Exercise of stock options, shares	1,027
Shares to cover employee payroll tax withholdings on stock issued under benefit plans, value	(1)	(5,489)			(9,614)			(15,104)
Shares to cover employee payroll tax withholdings on stock issued under benefit plans, shares	(271)
Tax benefits associated with stock-based compensation plans		2,628						2,628
Purchases of treasury stock					(425,773)			(425,773)
Purchase of treasury stock- shares	(7,741)
Other							(405)	(405)
Balance at Jun. 30, 2010	2,142	2,290,817	3,537,858	(48,230)	(1,858,255)		22,556	3,946,888
Balance at Jun. 30, 2010	177,177
Balance at Dec. 31, 2010	2,142	2,311,421	3,867,420	10,626	(2,158,129)		20,645	4,054,125
Balance at Dec. 31, 2010	170,717
Net income			109,282			109,282	15,583	124,865
Currency translation				26,474		26,474		26,474
Market valuation, net of tax (expense) benefit				(1,596)		(1,596)		(1,596)
Net deferred loss on cash flow hedges				(1,461)		(1,461)		(1,461)
Comprehensive income						132,699
Dividends declared			(31,665)					(31,665)
Distributions to noncontrolling interests							(16,850)	(16,850)
Issuance of common stock under benefit plans	7	1,274			8,770			10,051
Issuance of common stock under benefit plans, shares	972
Stock-based compensation expense		33,418			1,774			35,192
Exercise of stock options		(16,220)			113,436			97,216
Exercise of stock options, shares	2,240
Shares to cover employee payroll tax withholdings on stock issued under benefit plans, value	(3)	(19,283)						(19,286)
Shares to cover employee payroll tax withholdings on stock issued under benefit plans, shares	(339)
Tax benefits associated with stock-based compensation plans		6,464						6,464
Purchases of treasury stock					(835,001)			(835,001)
Purchase of treasury stock- shares	(15,378)
Other							2,068	2,068
Balance at Jun. 30, 2011		$ 2,317,074	$ 3,945,037	$ 34,043	$ (2,869,150)		$ 21,446	$ 3,450,596
Balance at Jun. 30, 2011	158,212