CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY Statement - USD ($) $ in Thousands	Total	Common Stock and Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Earnings (loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	$ 1,834,558	$ 91,162	$ 1,856,756	$ (113,360)
Balance at end of period	1,834,558	91,162	1,856,756	(113,360)
Repurchase of common stock	(99,957)	(99,957)
Common stock issued pursuant to stock-based compensation plans, net	4,777	4,777
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition	14,406	14,406
Dividends paid	(44,330)		(44,330)
Other Comprehensive Income (Loss), Net of Tax	0
Temporary Equity, Foreign Currency Translation Adjustments	(31,604)			(31,604)
Net earnings	110,758		110,758
Balance at beginning of period	1,859,940	5,364	1,953,999	(99,423)
Balance at end of period	1,859,940	5,364	1,953,999	(99,423)
Repurchase of common stock	(5,002)	(5,002)
Common stock issued pursuant to stock-based compensation plans, net	1,545	1,545
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition	8,481	8,481
Dividends paid	(22,098)		(22,098)
Other Comprehensive Income (Loss), Net of Tax	0
Temporary Equity, Foreign Currency Translation Adjustments	$ (45,541)			(45,541)
Common Stock, Dividends, Per Share, Cash Paid	$ 0
Net earnings	$ 71,563		71,563
Cumulative Effect of New Accounting Principle in Period of Adoption	80,280		80,280
Balance at beginning of period	1,868,888	10,388	2,003,464	(144,964)
Balance at end of period	1,868,888	10,388	2,003,464	(144,964)
Balance at beginning of period	1,876,786	1,355	2,024,523	(149,092)
Balance at end of period	1,876,786	1,355	2,024,523	(149,092)
Repurchase of common stock	(49,996)	(24,217)	(25,779)
Common stock issued pursuant to stock-based compensation plans, net	7,004	7,004
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition	17,214	17,214
Dividends paid	(46,064)		(46,064)
Derivative, Gain (Loss) on Derivative, Net	(1,586)			(1,586)
Other Comprehensive Income (Loss), Net of Tax	4			4
Temporary Equity, Foreign Currency Translation Adjustments	$ (2,776)			(2,776)
Common Stock, Dividends, Per Share, Cash Paid	$ 0.17
Net earnings	$ 107,866		107,866
Balance at beginning of period	1,902,695	1,354	2,058,680	(157,339)
Balance at end of period	1,902,695	1,354	2,058,680	(157,339)
Repurchase of common stock	(24,998)	(7,218)	(17,780)
Common stock issued pursuant to stock-based compensation plans, net	(1,704)	(1,704)
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition	8,924	8,924
Dividends paid	(23,033)		(23,033)
Derivative, Gain (Loss) on Derivative, Net	(779)			(779)
Other Comprehensive Income (Loss), Net of Tax	4			4
Temporary Equity, Foreign Currency Translation Adjustments	4,664			4,664
Net earnings	46,118		46,118
Cumulative Effect of New Accounting Principle in Period of Adoption	3,439		3,439
Balance at beginning of period	1,911,891	1,356	2,063,985	(153,450)
Balance at end of period	$ 1,911,891	$ 1,356	$ 2,063,985	$ (153,450)