Guarantor Financial Data (Cash Flow) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided (used) by operating activities	$ 108,888	$ 122,564
Capital expenditures	(94,702)	(84,180)
Payments for acquisitions, net of cash acquired	(10,143)	(3,996)
Intercompany loan proceeds	0	0
Intercompany loan payments	0	0
Intercompany return of capital		0
Intercompany capital contribution		0
Proceeds from disposition of assets	969	11,473
Affiliate investment activity, net	46,240	(3,825)
Net cash flows used by investing activities	(57,636)	(80,528)
Excess tax benefits from stock-based compensation arrangements	10,104	11,056
Payments on long-term debt	(15,000)	(475,000)
Proceeds from issuance of senior notes	0	498,075
Proceeds from issuance of long-term debt	0	400,000
Short-term financing, net	196,000	0
Borrowings under other financing arrangements, net	(571)	294
Repurchases of common shares	(370,127)	(533,864)
Payments of dividends	(57,337)	(55,569)
Payment of deferred loan costs	0	(9,657)
Intercompany loan proceeds	0	0
Intercompany loan payments	0	0
Intercompany distributions of capital		0
Intercompany capital contribution		0
Intercompany dividends	0	0
All other financing, net	(78)	(248)
Net cash flows used by financing activities	(237,009)	(164,913)
Effect of exchange rate changes on cash	(4,744)	2,941
Net change in cash and cash equivalents	(190,501)	(119,936)
Cash and cash equivalents at beginning of period	304,252	337,356
Cash and cash equivalents at end of period	113,751	217,420
Parent (Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided (used) by operating activities	245,150	49,256
Capital expenditures	0	0
Payments for acquisitions, net of cash acquired	0	0
Intercompany loan proceeds	0	0
Intercompany loan payments	0	0
Intercompany return of capital		0
Intercompany capital contribution		0
Proceeds from disposition of assets	0	0
Affiliate investment activity, net	0	0
Net cash flows used by investing activities	0	0
Excess tax benefits from stock-based compensation arrangements	0	0
Payments on long-term debt	(15,000)	(475,000)
Proceeds from issuance of senior notes		498,075
Proceeds from issuance of long-term debt		400,000
Short-term financing, net	196,000
Borrowings under other financing arrangements, net	0	9
Repurchases of common shares	(370,127)	(533,864)
Payments of dividends	(57,337)	(55,569)
Payment of deferred loan costs		(9,657)
Intercompany loan proceeds	0	0
Intercompany loan payments	0	0
Intercompany distributions of capital		0
Intercompany capital contribution		0
Intercompany dividends	0	0
All other financing, net	91	250
Net cash flows used by financing activities	(246,373)	(175,756)
Effect of exchange rate changes on cash	0	0
Net change in cash and cash equivalents	(1,223)	(126,500)
Cash and cash equivalents at beginning of period	2,609	150,308
Cash and cash equivalents at end of period	1,386	23,808
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided (used) by operating activities	138,849	74,283
Capital expenditures	(27,827)	(25,366)
Payments for acquisitions, net of cash acquired	0	0
Intercompany loan proceeds	911	7,869
Intercompany loan payments	(52)	(26,648)
Intercompany return of capital		1,982
Intercompany capital contribution		(483)
Proceeds from disposition of assets	93	87
Affiliate investment activity, net	0	0
Net cash flows used by investing activities	(26,875)	(42,559)
Excess tax benefits from stock-based compensation arrangements	8,265	8,837
Payments on long-term debt	0	0
Proceeds from issuance of senior notes		0
Proceeds from issuance of long-term debt		0
Short-term financing, net	0
Borrowings under other financing arrangements, net	(15)	171
Repurchases of common shares	0	0
Payments of dividends	0	0
Payment of deferred loan costs		0
Intercompany loan proceeds	173,511	0
Intercompany loan payments	(56,333)	0
Intercompany distributions of capital		0
Intercompany capital contribution		0
Intercompany dividends	(237,402)	(40,732)
All other financing, net	0	0
Net cash flows used by financing activities	(111,974)	(31,724)
Effect of exchange rate changes on cash	0	0
Net change in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided (used) by operating activities	(26,091)	50,767
Capital expenditures	(66,875)	(58,814)
Payments for acquisitions, net of cash acquired	(10,143)	(3,996)
Intercompany loan proceeds	56,333	0
Intercompany loan payments	(173,511)	0
Intercompany return of capital		0
Intercompany capital contribution		0
Proceeds from disposition of assets	876	11,386
Affiliate investment activity, net	46,240	(3,825)
Net cash flows used by investing activities	(147,080)	(55,249)
Excess tax benefits from stock-based compensation arrangements	1,839	2,219
Payments on long-term debt	0	0
Proceeds from issuance of senior notes		0
Proceeds from issuance of long-term debt		0
Short-term financing, net	0
Borrowings under other financing arrangements, net	(556)	114
Repurchases of common shares	0	0
Payments of dividends	0	0
Payment of deferred loan costs		0
Intercompany loan proceeds	52	26,648
Intercompany loan payments	(911)	(7,869)
Intercompany distributions of capital		(1,982)
Intercompany capital contribution		483
Intercompany dividends	(11,618)	(11,010)
All other financing, net	(169)	(498)
Net cash flows used by financing activities	(11,363)	8,105
Effect of exchange rate changes on cash	(4,744)	2,941
Net change in cash and cash equivalents	(189,278)	6,564
Cash and cash equivalents at beginning of period	301,643	187,048
Cash and cash equivalents at end of period	112,365	193,612
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided (used) by operating activities	(249,020)	(51,742)
Capital expenditures	0	0
Payments for acquisitions, net of cash acquired	0	0
Intercompany loan proceeds	(57,244)	(7,869)
Intercompany loan payments	173,563	26,648
Intercompany return of capital		(1,982)
Intercompany capital contribution		483
Proceeds from disposition of assets	0	0
Affiliate investment activity, net	0	0
Net cash flows used by investing activities	116,319	17,280
Excess tax benefits from stock-based compensation arrangements	0	0
Payments on long-term debt	0	0
Proceeds from issuance of senior notes		0
Proceeds from issuance of long-term debt		0
Short-term financing, net	0
Borrowings under other financing arrangements, net	0	0
Repurchases of common shares	0	0
Payments of dividends	0	0
Payment of deferred loan costs		0
Intercompany loan proceeds	(173,563)	(26,648)
Intercompany loan payments	57,244	7,869
Intercompany distributions of capital		1,982
Intercompany capital contribution		(483)
Intercompany dividends	249,020	51,742
All other financing, net	0	0
Net cash flows used by financing activities	132,701	34,462
Effect of exchange rate changes on cash	0	0
Net change in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0