Debt (Summary Of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Nov. 14, 2011
Debt Instrument [Line Items]
Long-term debt	$ 4,941,764	$ 5,168,226
Less: Current portion	95,169	689,146
Total long-term debt	4,846,595	4,479,080
Other Long Term Debt
Debt Instrument [Line Items]
Long-term debt	2,614	3,666
Loans Payable | U.S. Term Loans
Debt Instrument [Line Items]
Long-term debt	1,179,688	1,250,000	1,250,000
Revolving Facility | Revolving Facility
Debt Instrument [Line Items]
Long-term debt	340,000	0
Convertible Debt | Cash Convertible Notes
Debt Instrument [Line Items]
Long-term debt	1,019,108	937,160
Convertible Debt | Senior Convertible Notes
Debt Instrument [Line Items]
Long-term debt	0	593,983
Senior Notes | 2017 Senior Notes
Debt Instrument [Line Items]
Long-term debt	550,000	550,000
Senior Notes | 2018 Senior Notes
Debt Instrument [Line Items]
Long-term debt	836,657	818,774
Senior Notes | 2020 Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,013,697	$ 1,014,643