Condensed Consolidated Statement of Changes in Stockholders' Equity (unaudited) (USD $) In Thousands	Common stock [Member]	Additional paid-in capital [Member]	Retained earnings [Member]	Accumulated other comprehensive earnings [Member]	Treasury stock [Member]	Total
Beginning Balance at Dec. 31, 2014	$ 1,021	$ 1,325,338	$ 3,520,201	$ (71,927)	$ (19,273)	$ 4,755,360
Net earnings	0	0	155,773	0	0	155,773
Stock option exercises	1	7,383	0	0	0	7,384
Treasury stock sold	0	737	0	0	50	787
Currency translation adjustments, net of tax	0	0	0	(92,010)	0	(92,010)
Stock based compensation	0	13,801	0	0	0	13,801
Restricted stock activity	3	(1,120)	0	0	0	(1,117)
Stock option tax benefit, net of shortfalls	0	4,107	0	0	0	4,107
Conversion of senior subordinated convertible notes, net of tax	0	(10,496)	0	0	0	(10,496)
Dividends declared	0	0	(25,131)	0	0	(25,131)
Post retirement benefit plan adjustments	0	0	0	(1,063)	0	(1,063)
Ending Balance at Mar. 31, 2015	$ 1,025	$ 1,339,750	$ 3,650,843	$ (165,000)	$ (19,223)	$ 4,807,395