Supplemental Guarantor And Parent Company Condensed Financial Information (Parent Company Long-Term Financing Arrangements) (Details) (USD $)	Sep. 30, 2011	Dec. 31, 2010	Nov. 30, 2006
Total debt	$ 1,064,500,000	$ 985,500,000
Current portion of long-term debt	183,900,000	121,000,000
Long-term debt	880,600,000	864,500,000
Debt maturities twelve month period ending in 2015	125,000,000
Parent Company [Member] \| North America [Member] \| Senior Floating Rate Notes [Member]
Debt principal amount	125,000,000	125,000,000
Debt Instrument Maturity Dates	2015
Parent Company [Member] \| North America [Member] \| Subordinated Convertible Notes Due 2029 [Member]
Debt principal amount	429,500,000	429,500,000
Debt discount	(264,700,000)	(265,600,000)
Debt Instrument Maturity Dates	2029
Parent Company [Member] \| North America [Member] \| 0.875% Convertible Notes Due 2013 [Member]
Debt principal amount	355,000,000	355,000,000	355,000,000
Debt discount	(45,400,000)	(59,500,000)
Debt Instrument Maturity Dates	2013
Stated annual interest rate	0.875%
Debt maturities twelve month period ending in 2014	355,000,000
Parent Company [Member] \| North America [Member] \| Other Debt [Member]
Debt principal amount	9,000,000	9,000,000
Parent Company [Member] \| North America [Member] \| 1.00% Senior Convertible Notes Due 2012 [Member]
Debt principal amount	10,600,000	10,600,000
Debt discount	(600,000)	(1,100,000)
Debt Instrument Maturity Dates	2012
Debt maturities twelve month period ending in 2013	10,600,000
Parent Company [Member] \| North America [Member] \| 7.125% Senior Notes [Member]
Debt principal amount	200,000,000	200,000,000
Debt Instrument Maturity Dates	2017
Stated annual interest rate	7.125%
North America [Member] \| Other Debt [Member]
Total debt	9,000,000	9,000,000
Subordinated Convertible Notes Due 2029 [Member]
Debt Instrument Maturity Dates	November 2029	November 2029
1.00% Senior Convertible Notes Due 2012 [Member]
Debt Instrument Maturity Dates	October 2012	October 2012
0.875% Convertible Notes Due 2013 [Member]
Debt Instrument Maturity Dates	November 15, 2013
Stated annual interest rate	0.875%
7.125% Senior Notes [Member]
Debt principal amount	200,000,000	200,000,000
Debt Instrument Maturity Dates	2017
Stated annual interest rate	7.125%	7.125%
Senior Floating Rate Notes [Member]
Debt principal amount	125,000,000	125,000,000
Stated annual interest rate	2.70%	2.70%
Parent Company [Member]
Total debt	818,400,000	802,900,000
Long-term debt	$ 818,400,000	$ 802,900,000

Debt instrument maturity dates.

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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Interest rate stated in the contractual debt agreement.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Amount of long-term debt of the registrant maturing in year three following the date of the latest balance sheet presented in the financial statements, if not separately disclosed in the consolidated statements.

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Amount of long-term debt of the registrant maturing in year four following the date of the latest balance sheet presented in the financial statements, if not separately disclosed in the consolidated statements.

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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