FINANCING ARRANGEMENTS - Schedule of Long-term Debt (Details) - USD ($)	Dec. 31, 2019	Dec. 30, 2019	Mar. 08, 2019	Dec. 31, 2018	Jun. 01, 2018	Mar. 26, 2018	Dec. 18, 2017	Mar. 21, 2017	Jan. 01, 2017	Mar. 27, 2015	Jan. 30, 2015	Dec. 02, 2013
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 26,188,000,000			$ 24,632,000,000
Total long-term debt and other	25,895,000,000			24,305,000,000
Less: Current portion of long-term debt and other	1,234,000,000			228,000,000
Non-current portion of long-term debt	24,661,000,000			24,077,000,000
Term Loan B Facility Due June 2025
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	3,869,000,000			4,394,000,000
Total long-term debt and other	$ 3,768,000,000			4,269,000,000
Stated interest rate	4.74%
Term Loan B Facility Due November 2025
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 1,275,000,000			1,481,000,000
Total long-term debt and other	$ 1,257,000,000			1,456,000,000
Stated interest rate	4.49%
Senior Secured Notes 6.50% Due March 2022
Long-term debt, net of unamortized debt discount [Line Items]
Stated interest rate	6.50%							6.50%
Senior Secured Notes 7.00% Due March 2024
Long-term debt, net of unamortized debt discount [Line Items]
Stated interest rate	7.00%							7.00%
Senior Secured Notes 5.50% Due November 2025
Long-term debt, net of unamortized debt discount [Line Items]
Stated interest rate	5.50%
Senior Secured Notes 5.75% Due August 2027
Long-term debt, net of unamortized debt discount [Line Items]
Stated interest rate	5.75%
9.00% Senior Unsecured Notes due December 2025
Long-term debt, net of unamortized debt discount [Line Items]
Stated interest rate							9.00%
Senior Secured Notes | Senior Secured Notes 6.50% Due March 2022
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 1,250,000,000			1,250,000,000
Total long-term debt and other	1,242,000,000			1,239,000,000
Senior Secured Notes | Senior Secured Notes 7.00% Due March 2024
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	2,000,000,000			2,000,000,000
Total long-term debt and other	1,983,000,000			1,979,000,000
Senior Secured Notes | Senior Secured Notes 5.50% Due November 2025
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	1,750,000,000			1,750,000,000
Total long-term debt and other	1,733,000,000			1,730,000,000
Senior Secured Notes | Senior Secured Notes 5.75% Due August 2027
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	500,000,000			0
Total long-term debt and other	493,000,000			0
Senior Unsecured Notes | 5.625 % Senior Unsecured Notes due December 2021
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	0			700,000,000
Total long-term debt and other	$ 0			697,000,000
Stated interest rate	5.625%		5.625%									5.625%
Senior Unsecured Notes | 5.50% Senior Unsecured Notes due March 2023
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 402,000,000			1,000,000,000
Total long-term debt and other	$ 400,000,000			995,000,000
Stated interest rate	5.50%		5.50%								5.50%
Senior Unsecured Notes | 5.875% Senior Unsecured Notes due May 2023
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 1,448,000,000			3,250,000,000
Total long-term debt and other	$ 1,441,000,000			3,229,000,000
Stated interest rate	5.875%		5.875%							5.875%
Senior Unsecured Notes | 4.50% Senior Unsecured Notes euro-denominated debt Due May 2023
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 1,682,000,000			1,720,000,000
Total long-term debt and other	$ 1,674,000,000			1,709,000,000
Stated interest rate	4.50%									4.50%
Senior Unsecured Notes | 6.125% Senior Unsecured Notes due April 2025
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 3,250,000,000			3,250,000,000
Total long-term debt and other	$ 3,230,000,000			3,226,000,000
Stated interest rate	6.125%									6.125%
Senior Unsecured Notes | 9.00% Senior Unsecured Notes due December 2025
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 1,500,000,000			1,500,000,000
Total long-term debt and other	$ 1,473,000,000			1,469,000,000
Stated interest rate	9.00%						9.00%
Senior Unsecured Notes | 9.25% Senior Unsecured Notes Due April 2026
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 1,500,000,000			1,500,000,000
Total long-term debt and other	$ 1,484,000,000			1,482,000,000
Stated interest rate	9.25%					9.25%
Senior Unsecured Notes | 8.50% Senior Unsecured Notes Due January 2027
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 1,750,000,000			750,000,000
Total long-term debt and other	$ 1,756,000,000			738,000,000
Stated interest rate	8.50%				8.50%
Senior Unsecured Notes | 7.00% Senior Unsecured Notes Due January 2028
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 750,000,000			0
Total long-term debt and other	$ 741,000,000			0
Stated interest rate	7.00%
Senior Unsecured Notes | 5.00% Senior Unsecured Notes Due January 2028
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 1,250,000,000			0
Total long-term debt and other	$ 1,234,000,000			0
Stated interest rate	5.00%	5.00%
Senior Unsecured Notes | 7.25% Senior Unsecured Notes Due May 2029
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 750,000,000			0
Total long-term debt and other	$ 740,000,000			0
Stated interest rate	7.25%
Senior Unsecured Notes | 5.25% Senior Unsecured Notes Due January 2030
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 1,250,000,000			0
Total long-term debt and other	$ 1,234,000,000			0
Stated interest rate	5.25%	5.25%
Senior Unsecured Notes | Other
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	$ 12,000,000			12,000,000
Total long-term debt and other	12,000,000			12,000,000
Revolving credit facility
Long-term debt, net of unamortized debt discount [Line Items]
Total long-term debt and other									$ 9,939,000,000
Revolving credit facility | 2023 Revolving Credit Facility Due June 2023
Long-term debt, net of unamortized debt discount [Line Items]
Principal Amount	0			75,000,000
Total long-term debt and other	$ 0			$ 75,000,000
Stated interest rate	4.74%