LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (DETAILS) (USD $) In Millions, unless otherwise specified							12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Fixed-rate notes payable due through 2024 [Member]	Dec. 31, 2012 Fixed-rate notes payable due through 2024 [Member]	Dec. 31, 2013 Variable-rate notes payable due through 2023 [Member]	Dec. 31, 2012 Variable-rate notes payable due through 2023 [Member]	Dec. 31, 2013 Scheduled debt payments [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 871	$ 1,032	$ 703	$ 844	$ 168	$ 188
Less current portion	117	161
Long-term debt, net of current portion	754	871
Weighted-average variable-interest rate	5.70%	5.80%
Weighted-average variable-interest rate	1.70%	2.00%
Debt payments							161
Long-term Debt, Fiscal Year Maturity [Abstract]
2014	117
2015	113
2016	111
2017	116
2018	147
Thereafter	267
Long-term Debt	$ 871	$ 1,032	$ 703	$ 844	$ 168	$ 188