Contractual interest rate for funds borrowed, under the debt agreement.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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DEBT - Tabular Disclosure - Notes and Debentures and Other (Details) - USD ($) $ in Millions	Dec. 31, 2015	Jun. 15, 2015	Mar. 24, 2015	Dec. 31, 2014
Debt
Other	$ 13			$ 14
Total long-term debt, current and non-current	$ 3,423			$ 3,424
Senior notes and debentures \| 4.8% Notes and Debentures Due 15 June 2015
Debt
Interest rate (as a percent)		4.80%		4.80%
Notes and debentures				$ 500
Senior notes and debentures \| 6.125% Notes and Debentures Due 3 October 2016
Debt
Interest rate (as a percent)	6.125%			6.125%
Notes and debentures	$ 1,000			$ 1,000
Senior notes and debentures \| 5.85% Notes and Debentures Due 15 March 2017
Debt
Interest rate (as a percent)	5.85%			5.85%
Notes and debentures	$ 300			$ 300
Senior notes and debentures \| 6.625% Notes and Debentures Due 15 April 2018
Debt
Interest rate (as a percent)	6.625%			6.625%
Notes and debentures	$ 114			$ 114
Senior notes and debentures \| 7.125% Notes and Debentures Due 15 March 2020
Debt
Interest rate (as a percent)	7.125%			7.125%
Notes and debentures	$ 500			$ 500
Senior notes and debentures \| 5.95% Notes and Debentures Due 15 March 2022
Debt
Interest rate (as a percent)	5.95%			5.95%
Notes and debentures	$ 400			$ 400
Senior notes and debentures \| 4.45% Notes and Debentures Due 1 April 2025
Debt
Interest rate (as a percent)	4.45%		4.45%
Notes and debentures	$ 500
Senior notes and debentures \| 7.75% Notes and Debentures Due 1 August 2029
Debt
Interest rate (as a percent)	7.75%			7.75%
Notes and debentures	$ 296			$ 296
Senior notes and debentures \| 6.5% Notes and Debentures Due 15 August 2032
Debt
Interest rate (as a percent)	6.50%			6.50%
Notes and debentures	$ 300			$ 300