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OTHER FINANCIAL DATA - COMPREHENSIVE INCOME AND EQUITY 4 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Tax Expense Associated With Other Comprehensive Income [Line Items]
Other comprehensive income before reclassifications, financial instruments	$ (7)	$ 2
Amounts reclassified from accumulated other comprehensive income, pension and other postretirement benefits	2	1
Amounts reclassified from accumulated other comprehensive income, financial instruments	1	1
Total Shareholders' Equity
Income Tax Expense Associated With Other Comprehensive Income [Line Items]
Other comprehensive income before reclassifications, financial instruments	(7)	2
Amounts reclassified from accumulated other comprehensive income, pension and other postretirement benefits	2	1
Amounts reclassified from accumulated other comprehensive income, financial instruments	$ 1	$ 1

Tax effect of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income.

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- Definition

Tax effect of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

+ References+ Details