Long-Term Debt (Details 2) (USD $)					0 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 7 % Senior Notes due 2013	Dec. 31, 2012 7 % Senior Notes due 2013	Oct. 02, 2013 7 % Senior Notes due 2013 Subsequent event	Sep. 30, 2013 6 5/8% Senior Notes due 2014	Dec. 31, 2012 6 5/8% Senior Notes due 2014	Sep. 30, 2013 7 3/4% Senior Notes due 2015	Dec. 31, 2012 7 3/4% Senior Notes due 2015	Sep. 30, 2013 7 1/8% Senior Notes due 2016	Dec. 31, 2012 7 1/8% Senior Notes due 2016	Sep. 30, 2013 4 5/8% Senior Notes due 2017	Dec. 31, 2012 4 5/8% Senior Notes due 2017	Sep. 30, 2013 4 1/4% Senior Notes due 2018	Apr. 05, 2013 4 1/4% Senior Notes due 2018	Sep. 30, 2013 7 7/8% Senior Notes due 2019	Dec. 31, 2012 7 7/8% Senior Notes due 2019	Sep. 30, 2013 5 1/8% Senior Notes due 2020	Apr. 05, 2013 5 1/8% Senior Notes due 2020	Sep. 30, 2013 6 3/4% Senior Notes due 2021	Dec. 31, 2012 6 3/4% Senior Notes due 2021	Sep. 30, 2013 5 7/8% Senior Notes due 2022	Dec. 31, 2012 5 7/8% Senior Notes due 2022	Sep. 30, 2013 5% Senior Notes due 2023	Dec. 31, 2012 5% Senior Notes due 2023	Sep. 30, 2013 Mortgages and other notes payable	Dec. 31, 2012 Mortgages and other notes payable
Long-term debt
Carrying Value	$ 13,861,795,000	$ 11,615,427,000	$ 451,448,000	$ 500,000,000		$ 1,000,000,000	$ 1,000,000,000	$ 750,000,000	$ 750,000,000	$ 1,500,000,000	$ 1,500,000,000	$ 900,000,000	$ 900,000,000	$ 1,200,000,000		$ 1,400,000,000	$ 1,400,000,000	$ 1,100,000,000		$ 2,000,000,000	$ 2,000,000,000	$ 2,000,000,000	$ 2,000,000,000	$ 1,500,000,000	$ 1,500,000,000	$ 60,347,000	$ 65,427,000
Fair Value	14,361,700,000	12,783,027,000	451,498,000	521,875,000		1,055,050,000	1,078,500,000	821,100,000	844,725,000	1,649,595,000	1,683,750,000	920,250,000	940,500,000	1,203,000,000		1,598,100,000	1,669,500,000	1,081,135,000		2,108,600,000	2,280,000,000	2,019,900,000	2,150,000,000	1,393,125,000	1,548,750,000	60,347,000	65,427,000
Capital lease obligations	226,821,000	248,304,000
Total long-term debt and capital lease obligations (including current portion)	14,088,616,000	11,863,731,000
Interest rate (as a percent)	7.00%		7.00%	7.00%	7.00%	6.625%	6.625%	7.75%	7.75%	7.125%	7.125%	4.625%	4.625%	4.25%	4.25%	7.875%	7.875%	5.125%	5.125%	6.75%	6.75%	5.875%	5.875%	5.00%	5.00%
Debt repurchased			49,000,000
Principal balance of debt redeemed					$ 451,000,000