CONSOLIDATED FINANCIAL STATEMENTS Changes to Equity Statement (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Dividend equivalents on participating securities		$ 0
Other	$ 14	17
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other	$ (14)	(15)
Retained Earnings [Member] | Scenario, Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Dividend equivalents on participating securities		15
Other		0
Retained Earnings [Member] | Scenario, Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Dividend equivalents on participating securities		15
Other		$ 15