FINANCING ARRANGEMENTS - Summary of Consolidated Long-term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2017	Mar. 21, 2017	Dec. 31, 2016
Long-term debt, net of unamortized debt discount
Principal Amount	$ 28,778		$ 30,169
Total long-term debt	28,461		29,846
Less current portion	813		1
Non-current portion of long-term debt	27,648		29,845
Series A-3 Tranche A Term Loan Facility
Long-term debt, net of unamortized debt discount
Principal Amount	0		1,032
Total long-term debt	0		1,016
Series A-4 Tranche Term Loan Facility
Long-term debt, net of unamortized debt discount
Principal Amount	0		668
Total long-term debt	0		658
Series D-2 Tranche B Term Loan Facility
Long-term debt, net of unamortized debt discount
Principal Amount	0		1,068
Total long-term debt	0		1,048
Series C-2 Tranche B Term Loan Facility
Long-term debt, net of unamortized debt discount
Principal Amount	0		823
Total long-term debt	0		805
Series E-1 Tranche B Term Loan Facility
Long-term debt, net of unamortized debt discount
Principal Amount	0		2,456
Total long-term debt	0		2,429
Series F Tranche B Term Loan Facility
Long-term debt, net of unamortized debt discount
Principal Amount	$ 6,610		3,892
Stated interest rate on debt (as a percent)	5.83%
Total long-term debt	$ 6,472		3,815
6.50% Senior Secured Notes due March in 2022
Long-term debt, net of unamortized debt discount
Principal Amount	$ 1,250		0
Stated interest rate on debt (as a percent)	6.50%	6.50%
Total long-term debt	$ 1,234		0
7.00% Senior Secured Notes due in March 2024
Long-term debt, net of unamortized debt discount
Principal Amount	$ 2,000		0
Stated interest rate on debt (as a percent)	7.00%	7.00%
Total long-term debt	$ 1,974		0
6.75% Senior Notes due in August 2018
Long-term debt, net of unamortized debt discount
Principal Amount	$ 500		1,600
Stated interest rate on debt (as a percent)	6.75%
Total long-term debt	$ 498		1,593
5.375% Senior Notes due March 2020
Long-term debt, net of unamortized debt discount
Principal Amount	$ 2,000		2,000
Stated interest rate on debt (as a percent)	5.375%
Total long-term debt	$ 1,987		1,985
7.00% Senior Notes due in October 2020
Long-term debt, net of unamortized debt discount
Principal Amount	$ 690		690
Stated interest rate on debt (as a percent)	7.00%
Total long-term debt	$ 689		689
6.375% Senior Notes due in October 2020
Long-term debt, net of unamortized debt discount
Principal Amount	$ 2,250		2,250
Stated interest rate on debt (as a percent)	6.375%
Total long-term debt	$ 2,234		2,231
7.50% Senior Notes due in July 2021
Long-term debt, net of unamortized debt discount
Principal Amount	$ 1,625		1,625
Stated interest rate on debt (as a percent)	7.50%
Total long-term debt	$ 1,614		1,613
6.75% Senior Notes due in August 2021
Long-term debt, net of unamortized debt discount
Principal Amount	$ 650		650
Stated interest rate on debt (as a percent)	6.75%
Total long-term debt	$ 647		647
5.625% Senior Notes due in December 2021
Long-term debt, net of unamortized debt discount
Principal Amount	$ 900		900
Stated interest rate on debt (as a percent)	5.625%
Total long-term debt	$ 895		894
7.25% Senior Notes due in July 2022
Long-term debt, net of unamortized debt discount
Principal Amount	$ 550		550
Stated interest rate on debt (as a percent)	7.25%
Total long-term debt	$ 544		543
5.50% Senior Notes due March 2023
Long-term debt, net of unamortized debt discount
Principal Amount	$ 1,000		1,000
Stated interest rate on debt (as a percent)	5.50%
Total long-term debt	$ 993		992
5.875% Senior Notes due May 2023
Long-term debt, net of unamortized debt discount
Principal Amount	$ 3,250		3,250
Stated interest rate on debt (as a percent)	5.875%
Total long-term debt	$ 3,222		3,220
4.50% Senior Notes due May 2023
Long-term debt, net of unamortized debt discount
Principal Amount	$ 1,714		1,578
Stated interest rate on debt (as a percent)	4.50%
Total long-term debt	$ 1,699		1,563
6.125% Senior Notes due April 2025
Long-term debt, net of unamortized debt discount
Principal Amount	$ 3,250		3,250
Stated interest rate on debt (as a percent)	6.125%
Total long-term debt	$ 3,220		3,218
Other
Long-term debt, net of unamortized debt discount
Principal Amount	14		12
Total long-term debt	$ 14		12
Revolving Credit Facility
Long-term debt, net of unamortized debt discount
Stated interest rate on debt (as a percent)	4.98%
Revolving Credit Facility | Revolving Credit Facility Due April 2018
Long-term debt, net of unamortized debt discount
Principal Amount	$ 0		875
Total long-term debt	0		875
Revolving Credit Facility | Revolving Credit Facility Due April 2020
Long-term debt, net of unamortized debt discount
Principal Amount	525		0
Total long-term debt	$ 525		$ 0