CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock at Par Value [Member]	Capital in Excess of Par Value [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2012	$ 3,987,362	$ 125,424	$ 1,086,239	$ (652,867)	$ 3,279,289	$ 145,137	$ 4,140
Consolidated net income	399,876	0	0	0	399,420	0	456
Other comprehensive income (loss)	80,415	0	0	0	0	80,415	0
Amortization of stock-based compensation	36,923	0	36,923	0	0	0	0
Shares issued for stock-based compensation awards	36,014	0	(59,118)	95,132	0	0	0
Tax benefits related to stock-based compensation awards	7,031	0	7,031	0	0	0	0
Repurchases of common stock	(362,793)	0	0	(362,793)	0	0	0
Balance at Dec. 31, 2013	4,184,828	125,424	1,071,075	(920,528)	3,678,709	225,552	4,596
Consolidated net income	498,390	0	0	0	498,045	0	345
Other comprehensive income (loss)	(290,169)	0	0	0	0	(290,169)	0
Amortization of stock-based compensation	41,930	0	41,930	0	0	0	0
Shares issued for stock-based compensation awards	21,788	0	(33,830)	55,618	0	0	0
Tax benefits related to stock-based compensation awards	6,907	0	6,907	0	0	0	0
Repurchases of common stock	(304,763)	0	0	(304,763)	0	0	0
Balance at Dec. 31, 2014	4,158,911	125,424	1,086,082	(1,169,673)	4,176,754	(64,617)	4,941
Consolidated net income	500,486	0	0	0	497,726	0	2,760
Other comprehensive income (loss)	(218,636)	0	0	0	0		1,453
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent						(220,089)
Amortization of stock-based compensation	47,274	0	47,274	0	0	0	0
Shares issued for stock-based compensation awards	14,900	0	(31,138)	46,038	0	0	0
Tax benefits related to stock-based compensation awards	5,795	0	5,795	0	0	0	0
Repurchases of common stock	(356,434)	0	0	(356,434)	0	0	0
Acquisition of non-controlling interest	47,451	0	0	0	0	0	47,451
Purchase of subsidiary shares from noncontrolling interest	(4,718)	0	(699)	0	0	0	(4,019)
Distributions	(218)	0	0	0	0	0	(218)
Balance at Dec. 31, 2015	$ 4,194,811	$ 125,424	$ 1,107,314	$ (1,480,069)	$ 4,674,480	$ (284,706)	$ 52,368