SHORT-TERM BORROWINGS AND LONG-TERM DEBT (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 30, 2009
Long-term debt, net of unamortized debt discount
Long-term debt	11,015,625	$ 6,651,011
Less current portion	(480,182)	(111,250)
Total long-term debt	10,535,443	6,539,761
Unamortized debt discount	132,896
Total fair value of long-term debt	11,700,000	6,700,000
New Revolving Credit Facility
Long-term debt, net of unamortized debt discount
Long-term debt		220,000
Term Loan A Facility
Long-term debt, net of unamortized debt discount
Long-term debt	2,083,462	2,185,520
Unamortized debt discount	30,288	39,480
New Term Loan B Facility
Long-term debt, net of unamortized debt discount
Long-term debt	1,275,167
Unamortized debt discount	24,833
Incremental Term Loan B Facility
Long-term debt, net of unamortized debt discount
Long-term debt	973,988
Unamortized debt discount	26,012
6.50% Senior Notes due in July 2016
Long-term debt, net of unamortized debt discount
Long-term debt	915,500	915,500
Interest rate on debt (as a percent)	6.50%
6.75% Senior Notes due in October 2017
Long-term debt, net of unamortized debt discount
Long-term debt	498,305	497,949
Interest rate on debt (as a percent)	6.75%
Unamortized debt discount	1,695	2,051
6.875% Senior Notes due in December 2018
Long-term debt, net of unamortized debt discount
Long-term debt	939,277	938,376
Interest rate on debt (as a percent)	6.875%
Unamortized debt discount	5,303	6,204
7.00% Senior Notes due in October 2020
Long-term debt, net of unamortized debt discount
Long-term debt	686,660	686,228
Interest rate on debt (as a percent)	7.00%
Unamortized debt discount	3,340	3,772
6.75% Senior Notes due in August 2021
Long-term debt, net of unamortized debt discount
Long-term debt	650,000	650,000
Interest rate on debt (as a percent)	6.75%
7.25% Senior Notes due in July 2022
Long-term debt, net of unamortized debt discount
Long-term debt	541,335	540,427
Interest rate on debt (as a percent)	7.25%
Unamortized debt discount	8,665	9,573
6.375% Senior Notes due in October 2020
Long-term debt, net of unamortized debt discount
Long-term debt	1,724,520
Interest rate on debt (as a percent)	6.375%
Unamortized debt discount	25,480
6.375% Senior Notes due in October 2020
Long-term debt, net of unamortized debt discount
Long-term debt	492,720
Interest rate on debt (as a percent)	6.375%
Unamortized debt discount	7,280
5.375% Convertible Notes due in August, 2014
Long-term debt, net of unamortized debt discount
Long-term debt		17,011
Interest rate on debt (as a percent)	5.375%	5.375%	5.375%	5.375%
Unamortized debt discount		1,697
1.375% Convertible Senior Notes due in 2017
Long-term debt, net of unamortized debt discount
Long-term debt	228,576
Interest rate on debt (as a percent)	1.375%
2.5% Contingent Convertible Senior Notes due in 2032
Long-term debt, net of unamortized debt discount
Long-term debt	5,133
Interest rate on debt (as a percent)	2.50%
1.5% Contingent Convertible Senior Notes due in 2033
Long-term debt, net of unamortized debt discount
Long-term debt	84
Interest rate on debt (as a percent)	1.50%
Other
Long-term debt, net of unamortized debt discount
Long-term debt	898