The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction and being repurchased. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

No definition available.

Indebtedness (Components Of Indebtedness) (Details)	12 Months Ended								12 Months Ended
Indebtedness (Components Of Indebtedness) (Details)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2014 5 7/8% Senior Notes due 2021 USD ($)	Dec. 31, 2013 5 7/8% Senior Notes due 2021 USD ($)	Dec. 31, 2014 Senior Unsecured Term Loan Due May 2, 2016, 4.5% USD ($)	Dec. 31, 2014 Senior Unsecured Term Loan Due May 2, 2016, 4.5% EUR (€)	Dec. 31, 2013 Senior Unsecured Term Loan Due May 2, 2016, 4.5% USD ($)	Dec. 31, 2014 1 1/4percent Convertible Senior Subordinated Notes Due December 15, 2036 USD ($)	Dec. 31, 2013 1 1/4percent Convertible Senior Subordinated Notes Due December 15, 2036 USD ($)	Jun. 30, 2014 1 1/4percent Convertible Senior Subordinated Notes Due December 15, 2036 USD ($)
Debt Instrument [Line Items]
Debt repurchased									$ 49,700,000
Repayments of Convertible Debt	201,200,000us-gaap_RepaymentsOfConvertibleDebt	0us-gaap_RepaymentsOfConvertibleDebt	0us-gaap_RepaymentsOfConvertibleDebt
Letters of Credit Outstanding, Amount	18,500,000	16,700,000
Debt Instrument, Maturity Date									Dec. 15, 2036
Debt Instrument, Convertible, Conversion Price											$ 40.27
Debt Conversion, Converted Instrument, Amount									151,500,000	100,000
Debt Interest Rate				5.875%	5.875%	4.50%	4.50%	4.50%	1.25%	1.25%
Convertible Debt									0	201,200,000
Senior Notes				300,000,000	300,000,000	242,000,000	200,000,000.0	275,000,000
Debt Instrument, Face Amount				300,000,000.0
Credit Facility	404,400,000us-gaap_LineOfCredit	360,000,000us-gaap_LineOfCredit
Other long-term debt	145,500,000us-gaap_OtherLongTermDebt	114,000,000us-gaap_OtherLongTermDebt
Total indebtedness	1,091,900,000us-gaap_LongTermDebt	1,250,200,000us-gaap_LongTermDebt
Less: Current portion of long-term debt	(94,300,000)us-gaap_LongTermDebtCurrent	(110,500,000)us-gaap_LongTermDebtCurrent
Convertible senior subordinated notes	0us-gaap_ConvertibleNotesPayableCurrent	(201,200,000)us-gaap_ConvertibleNotesPayableCurrent							0	(201,200,000)
Total indebtedness, less current portion	997,600,000us-gaap_LongTermDebtNoncurrent	938,500,000us-gaap_LongTermDebtNoncurrent
Debt Instrument, Interest Rate, Effective Percentage		6.10%	6.10%
Debt Instrument, Convertible, Conversion Ratio									24.8295
Debt Instrument, Convertible, Converted Value in Excess of Principal									$ 81,000,000	$ 100,000