Long-Term Debt (Details 2) (USD $)			0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Oct. 02, 2013 7 % Senior Notes due 2013	Dec. 31, 2013 7 % Senior Notes due 2013	Sep. 30, 2013 7 % Senior Notes due 2013	Dec. 31, 2012 7 % Senior Notes due 2013	Dec. 31, 2013 6 5/8% Senior Notes due 2014	Dec. 31, 2012 6 5/8% Senior Notes due 2014	Dec. 31, 2013 7 3/4% Senior Notes due 2015	Dec. 31, 2012 7 3/4% Senior Notes due 2015	Dec. 31, 2013 7 1/8% Senior Notes due 2016	Dec. 31, 2012 7 1/8% Senior Notes due 2016	Dec. 31, 2013 4 5/8% Senior Notes due 2017	Dec. 31, 2012 4 5/8% Senior Notes due 2017	May 16, 2012 4 5/8% Senior Notes due 2017	Dec. 31, 2013 4 1/4% Senior Notes due 2018	Apr. 05, 2013 4 1/4% Senior Notes due 2018	Dec. 31, 2012 4 1/4% Senior Notes due 2018	Dec. 31, 2013 7 7/8% Senior Notes due 2019	Dec. 31, 2012 7 7/8% Senior Notes due 2019	Dec. 31, 2013 5 1/8% Senior Notes due 2020	Apr. 05, 2013 5 1/8% Senior Notes due 2020	Dec. 31, 2012 5 1/8% Senior Notes due 2020	Dec. 31, 2013 6 3/4% Senior Notes due 2021	Dec. 31, 2012 6 3/4% Senior Notes due 2021	May 05, 2011 6 3/4% Senior Notes due 2021	Dec. 31, 2013 5 7/8% Senior Notes due 2022	Dec. 31, 2012 5 7/8% Senior Notes due 2022	May 16, 2012 5 7/8% Senior Notes due 2022	Dec. 31, 2013 5% Senior Notes due 2023	Dec. 31, 2012 5% Senior Notes due 2023	Dec. 27, 2012 5% Senior Notes due 2023	Dec. 31, 2013 Mortgages and other notes payable	Dec. 31, 2012 Mortgages and other notes payable
Long-term debt
Carrying Value	$ 13,409,313,000	$ 11,615,427,000				$ 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		$ 59,313,000	$ 65,427,000
Fair Value	14,025,557,000	12,783,027,000				521,875,000	1,040,200,000	1,078,500,000	813,750,000	844,725,000	1,657,500,000	1,683,750,000	946,962,000	940,500,000		1,221,792,000			1,603,000,000	1,669,500,000	1,104,950,000			2,122,500,000	2,280,000,000		1,997,500,000	2,150,000,000		1,458,090,000	1,548,750,000		59,313,000	65,427,000
Capital lease obligations	219,902,000	248,304,000
Total long-term debt and capital lease obligations (including current portion)	13,629,215,000	11,863,731,000
Interest rate (as a percent)	7.00%		7.00%	7.00%	7.00%	7.00%	6.625%	6.625%	7.75%	7.75%	7.125%	7.125%	4.625%	4.625%	4.625%	4.25%	4.25%	4.25%	7.875%	7.875%	5.125%	5.125%	5.125%	6.75%	6.75%	6.75%	5.875%	5.875%	5.875%	5.00%	5.00%	5.00%
Debt repurchased					49,000,000
Principal balance reclassified to current portion of long-term debt and capital lease obligations							1,000,000,000
Principal balance of debt redeemed			$ 451,000,000	$ 500,000,000