Consolidated Statement of Total Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total Shareholders' Equity	Noncontrolling Interests
Beginning Balance at Dec. 31, 2014				$ (106,159)
Consolidated net earnings	$ 205,715
Ending Balance at Sep. 30, 2015	4,252,580			(112,742)
Beginning Balance at Jun. 30, 2015				(112,814)
Consolidated net earnings	117,578
Ending Balance at Sep. 30, 2015	4,252,580			(112,742)
Beginning Balance at Dec. 31, 2015	4,060,177	$ 643	$ 3,287,827	(105,622)	$ 874,436	$ 4,057,284	$ 2,893
Beginning Balance (in shares) at Dec. 31, 2015		64,479,000
Consolidated net earnings	326,647				326,526	326,526	121
Other comprehensive earnings, net of tax	1,163			1,111		1,111	52
Dividends declared	(78,295)				(78,295)	(78,295)
Issuances of common stock for stock award plans	21,539	$ 2	21,537			21,539
Issuances of common stock for stock award plans (in shares)		231,000
Repurchases of common stock	(190,000)	$ (12)			(189,988)	(190,000)
Repurchases of common stock, Shares		(1,244,000)
Stock-based compensation expense	17,167		17,167			17,167
Ending Balance at Sep. 30, 2016	4,158,398	$ 633	3,326,531	(104,511)	932,679	4,155,332	3,066
Ending Balance (in shares) at Sep. 30, 2016		63,466,000
Beginning Balance at Jun. 30, 2016				(106,068)
Consolidated net earnings	159,478
Ending Balance at Sep. 30, 2016	$ 4,158,398	$ 633	$ 3,326,531	$ (104,511)	$ 932,679	$ 4,155,332	$ 3,066
Ending Balance (in shares) at Sep. 30, 2016		63,466,000