Derivatives (Offsetting Derivative Financial Instruments) (Detail) - USD ($) $ in Millions	Sep. 30, 2016		Dec. 31, 2015
Derivative Fair Value Gross Amount Assets Not Offset Against Collateral Net
Gross amount recognized in the balance sheet	$ 1,890		$ 1,852
Derivative, Collateral, Obligation to Return Cash	(712)		(582)
Derivative Fair Value Gross Amount Liabilities Not Offset Against Collateral Net
Gross amount recognized in the balance sheet	792		938
Assets
Derivative Fair Value Gross Amount Assets Not Offset Against Collateral Net
Gross amount recognized in the balance sheet	1,532	[1]	1,575	[2]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	(517)		(512)
Derivative, Collateral, Obligation to Return Cash	(551)	[3]	(627)	[4]
Derivative, Fair Value, Amount Offset Against Collateral, Net	464		436
Liability
Derivative Fair Value Gross Amount Liabilities Not Offset Against Collateral Net
Gross amount recognized in the balance sheet	792	[1]	938	[2]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	(517)		(512)
Derivative, Collateral, Right to Reclaim Cash	(173)	[3]	(173)	[4]
Derivative Fair Value Amount Offset Against Collateral Net	102		253
Derivative | Assets
Derivative Fair Value Gross Amount Assets Not Offset Against Collateral Net
Gross amount recognized in the balance sheet	1,532	[1]	1,575	[2]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	(517)		(512)
Derivative, Collateral, Obligation to Return Cash	(551)	[3]	(627)	[4]
Derivative, Fair Value, Amount Offset Against Collateral, Net	464		436
Derivative | Liability
Derivative Fair Value Gross Amount Liabilities Not Offset Against Collateral Net
Gross amount recognized in the balance sheet	792	[1]	938	[2]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	(517)		(512)
Derivative, Collateral, Right to Reclaim Cash	(173)	[3]	(173)	[4]
Derivative Fair Value Amount Offset Against Collateral Net	$ 102		$ 253

[1] Amount does not includ e the stock warrant associated with Vantiv Holding, LLC and IRLCs because these instruments are not subject to master netting or similar arrangements .

[2] Amount does not includ e the stock warrant associated with Vantiv Holding, LLC and IRLCs because these instruments are not subject to master netting or similar arrangements .

[3] Amount of collateral received as an offset to asset positions or pledged as an offset to liability positions. Collateral values in excess of related derivative amounts recognized in the Condensed Consolidated Balance Sheets were excluded from this table.

[4] Amount of collateral received as an offset to asset positions or pledged as an offset to liability positions. Collateral values in excess of related derivative amounts recognized in the Condensed Consolidated Balance Sheets were excluded from this table.