Long-Term Debt (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2011 6 3/8% Senior Notes due 2011	Dec. 31, 2010 6 3/8% Senior Notes due 2011	Jun. 30, 2011 7 % Senior Notes due 2013	Dec. 31, 2010 7 % Senior Notes due 2013	Jun. 30, 2011 6 5/8% Senior Notes due 2014	Dec. 31, 2010 6 5/8% Senior Notes due 2014	Jun. 30, 2011 7 3/4% Senior Notes due 2015	Dec. 31, 2010 7 3/4% Senior Notes due 2015	Jun. 30, 2011 7 1/8% Senior Notes due 2016	Dec. 31, 2010 7 1/8% Senior Notes due 2016	Jun. 30, 2011 7 7/8% Senior Notes due 2019	Dec. 31, 2010 7 7/8% Senior Notes due 2019	Jun. 30, 2011 6 3/4% Senior Notes due 2021	May 05, 2011 6 3/4% Senior Notes due 2021	Jun. 30, 2011 Mortgages and other notes payable	Dec. 31, 2010 Mortgages and other notes payable
Long-term debt
Carrying Value	$ 8,225,072	$ 6,227,965	$ 1,000,000	$ 1,000,000	$ 500,000	$ 500,000	$ 1,000,000	$ 1,000,000	$ 750,000	$ 750,000	$ 1,500,000	$ 1,500,000	$ 1,400,000	$ 1,400,000	$ 2,000,000		$ 75,072	$ 77,965
Fair Value	8,626,837	6,486,130	1,010,000	1,032,500	538,750	532,815	1,062,500	1,032,500	813,750	798,750	1,595,625	1,548,600	1,519,000	1,463,000	2,012,140		75,072	77,965
Capital lease obligations	276,374	286,971
Long-term debt and capital lease obligations (including current portion)	$ 8,501,446	$ 6,514,936
Interest rate (as a percent)			6.375%	6.375%	7.00%	7.00%	6.625%	6.625%	7.75%	7.75%	7.125%	7.125%	7.875%	7.875%	6.75%	6.75%

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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-Article 7
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). 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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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