Supplemental Cash Flow (Noncash Investing and Financing Activities) (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Interest paid
Interest	$ 379	$ 247
Income taxes paid, net
Income taxes	14	19
Transfers:
Portfolio loans to loans held for sale	38	64
Loans held for sale to portfolio loans	15	34
Portfolio loans to OREO	8	12
Additions to right of use assets under operating leases	4	0
Right-of-use assets recognized at adoption of ASU 2016-02	$ 509	$ 0

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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Value of loans held-for-sale transferred to loans held in the entity's portfolio in noncash transactions.

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