New Accounting Pronouncements New ASU impacts (Details) $ in Millions	3 Months Ended
Mar. 31, 2017 USD ($)
New ASU impacts [Abstract]
Proceeds and Excess Tax Benefit from Share-based Compensation	$ 28
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 76

The aggregate cash inflow comprised of the amount received from (a) employees to acquire the entity's shares under incentive awards, including stock option exercises and restricted stock arrangements, and (b) the excess tax benefit arising from such transactions.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration