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DEBT (Long-Term Debt) (Details) - USD ($) $ in Millions	12 Months Ended
DEBT (Long-Term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Apr. 30, 2015	Mar. 31, 2015
Debt Instrument [Line Items]
Total long-term debt	$ 3,651	$ 3,742
Debt issuance costs	(25)	(20)
Less: current portion of long-term debt	159	518
Total long-term debt, net of current portion	3,492	3,224
5.45% Senior Notes Due 2015 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 0	$ 500
Debt instrument, interest rate	5.45%	5.45%	5.45%
Debt instrument, maturity date	Nov. 01, 2015	Nov. 01, 2015
3.20% Senior Notes Due 2016 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 150	$ 304
Debt instrument, interest rate	3.20%		3.20%
Debt instrument, maturity date	Apr. 01, 2016
6.40% Senior Notes Due 2017 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 0	$ 375
Debt instrument, interest rate		6.40%	6.40%
Debt instrument, maturity date		Jul. 01, 2017
2.70% Senior Notes due April 2019 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 300	$ 300
Debt instrument, interest rate	2.70%
Debt instrument, maturity date	Apr. 01, 2019
4.75% Senior Notes due January 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 522	524
Debt instrument, interest rate	4.75%
Debt instrument, maturity date	Jan. 30, 2020
2.50% Senior Notes due March 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 299	0
Debt instrument, interest rate	2.50%			2.50%
Debt instrument, maturity date	Mar. 30, 2020
4.70% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 554	549
Debt instrument, interest rate	4.70%
Debt instrument, maturity date	Apr. 01, 2021
4.25% Senior Notes due April 2024 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 313	311
Debt instrument, interest rate	4.25%
Debt instrument, maturity date	Apr. 01, 2024
3.50% Senior Notes due March 2025 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 601	0
Debt instrument, interest rate	3.50%			3.50%
Debt instrument, maturity date	Mar. 30, 2025
6.95% Senior Notes Due 2037 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 247	421
Debt instrument, interest rate	6.95%
Debt instrument, maturity date	Jul. 01, 2037
5.75% Senior Notes Due 2040 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 368	439
Debt instrument, interest rate	5.75%
Debt instrument, maturity date	Jan. 30, 2040
4.70% Senior Notes due March 2045 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 300	0
Debt instrument, interest rate	4.70%			4.70%
Debt instrument, maturity date	Mar. 30, 2045
Other Long-term Debt [Member]
Debt Instrument [Line Items]
Other	$ 22	$ 39