Consolidated Statement of Total Equity (Unaudited) - USD ($) shares in Thousands, $ 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, 2015				$ (105,622)
Consolidated net earnings (loss)	$ 45,055
Ending Balance at Mar. 31, 2016	3,945,636			(103,833)
Beginning Balance at Dec. 31, 2016	4,142,590	$ 630	$ 3,334,461	(130,687)	$ 935,574	$ 4,139,978	$ 2,612
Beginning Balance (in shares) at Dec. 31, 2016		63,176
Consolidated net earnings (loss)	42,307				42,334	42,334	(27)
Other comprehensive earnings, net of tax	2,263			2,262		2,262	1
Dividends declared	(26,560)				(26,560)	(26,560)
Issuances of common stock for stock award plans	5,078	$ 1	5,077			5,078
Issuances of common stock for stock award plans (in shares)		60
Repurchases of common stock	(99,999)	$ (5)			(99,994)	(99,999)
Repurchases of common stock, Shares		(458)
Stock-based compensation expense	10,275		10,275			10,275
Ending Balance at Mar. 31, 2017	$ 4,075,954	$ 626	$ 3,349,813	$ (128,425)	$ 851,354	$ 4,073,368	$ 2,586
Ending Balance (in shares) at Mar. 31, 2017		62,778