OTHER FINANCIAL DATA - COMPREHENSIVE INCOME AND EQUITY 4 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Tax Expense Associated With Other Comprehensive Income [Line Items]
Other comprehensive income before reclassifications, financial instruments	$ 12	$ (7)	$ 5	$ (5)
Amounts reclassified from accumulated other comprehensive income, pension and other postretirement benefits	1	2	3	3
Amounts reclassified from accumulated other comprehensive income, financial instruments	(2)		(1)	1
Total Shareholders' Equity
Income Tax Expense Associated With Other Comprehensive Income [Line Items]
Other comprehensive income before reclassifications, financial instruments	12	(7)	5	(5)
Amounts reclassified from accumulated other comprehensive income, pension and other postretirement benefits	1	2	3	3
Amounts reclassified from accumulated other comprehensive income, financial instruments	$ (2)		$ (1)	$ 1