LONG-TERM DEBT - Long-Term Debt by Types and Interest Rates (Includes Current Portion) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Long-term debt	$ 0
Other	1	1
Long-term debt, before unamortized discounts	4,896	4,296
Less unamortized discounts	(5)	(5)
Total	4,891	4,291
Portion due within one year	0	409
7.50% debentures due 2013
Debt Instrument [Line Items]
Long-term debt	0	156
Debt, interest rate	7.50%
Debt, maturity date	Dec. 31, 2013
7.25% debentures due 2013
Debt Instrument [Line Items]
Long-term debt	0	129
Debt, interest rate	7.25%
Debt, maturity date	Dec. 31, 2013
6.95% debentures due 2017
Debt Instrument [Line Items]
Long-term debt	281	281
Debt, interest rate	6.95%
Debt, maturity date	Dec. 31, 2017
7.00% debentures due 2018
Debt Instrument [Line Items]
Long-term debt	62	62
Debt, interest rate	7.00%
Debt, maturity date	Dec. 31, 2018
7.375% notes due 2019
Debt Instrument [Line Items]
Long-term debt	500	500
Debt, interest rate	7.375%
Debt, maturity date	Dec. 31, 2019
Variable rate term loan credit facility due 2020
Debt Instrument [Line Items]
Long-term debt	550	0
Debt, maturity date	Sep. 30, 2020
9.00% debentures due 2021
Debt Instrument [Line Items]
Long-term debt	150	150
Debt, interest rate	9.00%
Debt, maturity date	Dec. 31, 2021
7.125% debentures due 2023
Debt Instrument [Line Items]
Long-term debt	191	191
Debt, interest rate	7.125%
Debt, maturity date	Dec. 31, 2023
4.625% notes due 2023
Debt Instrument [Line Items]
Long-term debt	500	0
Debt, interest rate	4.625%
Debt, maturity date	Sep. 15, 2023
8.50% debentures due 2025
Debt Instrument [Line Items]
Long-term debt	300	300
Debt, interest rate	8.50%
Debt, maturity date	Dec. 31, 2025
7.95% debentures due 2025
Debt Instrument [Line Items]
Long-term debt	136	136
Debt, interest rate	7.95%
Debt, maturity date	Dec. 31, 2025
7.70% debentures due 2026
Debt Instrument [Line Items]
Long-term debt	150	150
Debt, interest rate	7.70%
Debt, maturity date	Dec. 31, 2026
7.35% debentures due 2026
Debt Instrument [Line Items]
Long-term debt	62	62
Debt, interest rate	7.35%
Debt, maturity date	Dec. 31, 2026
7.85% debentures due 2026
Debt Instrument [Line Items]
Long-term debt	100	100
Debt, interest rate	7.85%
Debt, maturity date	Dec. 31, 2026
6.95% debentures due 2027
Debt Instrument [Line Items]
Long-term debt	300	300
Debt, interest rate	6.95%
Debt, maturity date	Dec. 31, 2027
7.375% debentures due 2032
Debt Instrument [Line Items]
Long-term debt	1,250	1,250
Debt, interest rate	7.375%
Debt, maturity date	Dec. 31, 2032
6.875% debentures due 2033
Debt Instrument [Line Items]
Long-term debt	275	275
Debt, interest rate	6.875%
Debt, maturity date	Dec. 31, 2033
Industrial revenue bonds, rates from 6.7% to 6.8%, due 2022
Debt Instrument [Line Items]
Long-term debt	88	88
Debt, interest rate minimum	6.70%
Debt, interest rate maximum	6.80%
Debt, maturity date	Dec. 31, 2022
Medium-term notes, rates from 6.6% to 7.3%, due 2013
Debt Instrument [Line Items]
Long-term debt	0	56
Debt, interest rate minimum	6.60%
Debt, interest rate maximum	7.30%
Debt, maturity date	Dec. 31, 2013
Notes payable, unsecured; weighted average interest rates are approximately 4.8%, due 2013-2027
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 109
Debt, interest rate	4.80%
Debt, maturity date minimum	Dec. 31, 2013
Debt, maturity date maximum	Dec. 31, 2027