Supplemental Consolidating Financial Information (Schedule of Consolidating Statements of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash provided by (used in) operating activities	$ (33,582)	$ 55,742	$ 332,804
Investing Activities
Capital expenditures	(147,286)	(296,984)	(395,225)
Minimum royalty payments	(7,317)	(14,947)	(13,269)
Proceeds from disposals and divestitures	62,358	433,453	22,825
Proceeds from sale-leaseback transactions	0	34,919
Purchases of short term investments	(211,929)	(213,726)	(236,862)
Proceeds from sales of short term investments	205,611	194,537	1,754
Proceeds from Sale of Available-for-sale Securities, Equity	9,464	0	0
Investments in and advances to affiliates, net	(16,657)	(15,260)	(17,758)
Change in restricted cash	0	3,453	6,869
Purchase of noncontrolling interest	0	0	17,500
Cash provided by (used in) investing activities	(105,756)	125,445	(649,166)
Financing Activities
Proceeds from Issuance of Long-term Debt		644,000	1,993,253
Payments to retire debt		(628,660)	(452,934)
Payments on term loan	(19,500)	(17,250)	(7,625)
Net payments on other debt	(5,695)	(6,836)	(682)
Net decrease in borrowings under lines of credit	0		(481,300)
Debt financing costs	(4,519)	(20,489)	(50,568)
Dividends paid	(2,123)	(25,475)	(42,440)
Proceeds from (Payments for) Other Financing Activities	(5,693)	0	0
Proceeds from exercise of options under incentive plans			5,131
Cash provided by (used in) financing activities	(37,530)	(54,710)	962,835
Increase (decrease) in cash and cash equivalents	(176,868)	126,477	646,473
Cash and cash equivalents, beginning of period	911,099	784,622	138,149
Cash and cash equivalents, end of period	734,231	911,099	784,622
Parent/Issuer [Member]
Cash provided by (used in) operating activities	(324,688)	(632,060)	(571,576)
Investing Activities
Capital expenditures	(2,700)	(3,320)	(4,424)
Proceeds from disposals and divestitures	57,625	0	0
Purchases of short term investments	(211,929)	(213,726)	(236,862)
Proceeds from sales of short term investments	205,611	194,537	1,754
Proceeds from Sale of Available-for-sale Securities, Equity	9,464
Investments in and advances to affiliates, net	(2,541)	(5,451)	(6,287)
Change in restricted cash		3,453	6,869
Purchase of noncontrolling interest			17,500
Cash provided by (used in) investing activities	55,530	(24,507)	(256,450)
Financing Activities
Proceeds from Issuance of Long-term Debt		644,000	1,993,253
Payments to retire debt		(628,660)
Payments on term loan	(19,500)	(17,250)	(7,625)
Net payments on other debt	(1,258)	(6,324)	(682)
Net decrease in borrowings under lines of credit			(375,000)
Debt financing costs	(2,219)	(19,864)	(50,022)
Dividends paid	(2,123)	(25,475)	(42,440)
Proceeds from (Payments for) Other Financing Activities	(15)
Proceeds from exercise of options under incentive plans			5,131
Transactions with affiliates, net	67,125	838,160	(84,651)
Cash provided by (used in) financing activities	42,010	784,587	1,437,964
Increase (decrease) in cash and cash equivalents	(227,148)	128,020	609,938
Cash and cash equivalents, beginning of period	799,333	671,313	61,375
Cash and cash equivalents, end of period	572,185	799,333	671,313
Guarantor Subsidiaries [Member]
Cash provided by (used in) operating activities	305,048	637,193	781,551
Investing Activities
Capital expenditures	(144,586)	(293,664)	(390,801)
Minimum royalty payments	(7,317)	(14,947)	(13,269)
Proceeds from disposals and divestitures	4,733	433,453	1,328
Proceeds from sale-leaseback transactions		34,919
Proceeds from Sale of Available-for-sale Securities, Equity	0
Investments in and advances to affiliates, net	(14,116)	(10,321)	(13,134)
Purchase of noncontrolling interest			0
Cash provided by (used in) investing activities	(161,286)	149,440	(415,876)
Financing Activities
Proceeds from Contributions from Parent		512	1,663
Proceeds from Issuance of Long-term Debt		0	0
Payments to retire debt			(452,934)
Payments on term loan	0	0	0
Net payments on other debt	(4,437)	(512)
Debt financing costs	0	0	0
Dividends paid	0
Proceeds from (Payments for) Other Financing Activities	0
Transactions with affiliates, net	(89,385)	(786,683)	110,639
Cash provided by (used in) financing activities	(93,822)	(786,683)	(340,632)
Increase (decrease) in cash and cash equivalents	49,940	(50)	25,043
Cash and cash equivalents, beginning of period	100,418	100,468	75,425
Cash and cash equivalents, end of period	150,358	100,418	100,468
Non-Guarantor Subsidiaries [Member]
Cash provided by (used in) operating activities	(13,942)	50,609	122,829
Investing Activities
Proceeds from disposals and divestitures	0	0	21,497
Proceeds from Sale of Available-for-sale Securities, Equity	0
Purchase of noncontrolling interest			0
Cash provided by (used in) investing activities			21,497
Financing Activities
Proceeds from Issuance of Long-term Debt		0	0
Payments on term loan	0	0	0
Net decrease in borrowings under lines of credit			(106,300)
Debt financing costs	(2,300)	(625)	(546)
Proceeds from (Payments for) Other Financing Activities	(5,678)
Transactions with affiliates, net	22,260	(51,477)	(25,988)
Cash provided by (used in) financing activities	14,282	(52,102)	(132,834)
Increase (decrease) in cash and cash equivalents	340	(1,493)	11,492
Cash and cash equivalents, beginning of period	11,348	12,841	1,349
Cash and cash equivalents, end of period	11,688	11,348	12,841
Eliminations [Member]
Investing Activities
Proceeds from disposals and divestitures	0	0	0
Proceeds from Sale of Available-for-sale Securities, Equity	0
Investments in and advances to affiliates, net		512	1,663
Purchase of noncontrolling interest			0
Cash provided by (used in) investing activities		512	1,663
Financing Activities
Proceeds from Contributions from Parent		(512)	(1,663)
Proceeds from Issuance of Long-term Debt		0	0
Payments on term loan	0	0	0
Debt financing costs	0	0	0
Dividends paid	0
Proceeds from (Payments for) Other Financing Activities	0
Cash provided by (used in) financing activities		(512)	(1,663)
Cash and cash equivalents, end of period	$ 0