CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Additional Paid-In Capital
Stock issued under share-based payment plans, benefit of excess tax shortfall	$ 9

Amount of decrease in additional paid in capital (APIC) resulting from a tax deficiency associated with a share-based compensation plan other than an employee stock ownership plan (ESOP).

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration