Debt (Summary Of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Long-term debt	$ 5,779,441	$ 5,431,948
Long-term debt, current maturities	3	94,752
Long-term debt, excluding current maturities	5,779,438	5,337,196
Revolving Facility
Debt Instrument [Line Items]
Long-term debt	460,000	0
2018 Senior Notes (6.00% coupon)
Debt Instrument [Line Items]
Long-term debt	500,000
Loans Payable | U.S. Term Loans
Debt Instrument [Line Items]
Long-term debt	0	1,156,250
Senior Notes | 2016 Senior Notes
Debt Instrument [Line Items]
Long-term debt	498,825	0
Senior Notes | 2017 Senior Notes
Debt Instrument [Line Items]
Long-term debt	0	550,000
Senior Notes | 2018 Senior Notes (2.60% coupon)
Debt Instrument [Line Items]
Long-term debt	648,710	0
Senior Notes | 2018 Senior Notes (6.00% coupon)
Debt Instrument [Line Items]
Long-term debt	813,691	826,974
Senior Notes | 2020 Senior Notes
Debt Instrument [Line Items]
Long-term debt	1,012,352	1,013,372
Senior Notes | 2023 Senior Notes
Debt Instrument [Line Items]
Long-term debt	748,552	748,452
Senior Notes | Other
Debt Instrument [Line Items]
Long-term debt	132	132
Convertible Debt | Cash Convertible Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,597,179	$ 1,136,768