Stock-Based Compensation Expense Recognized in Noninterest Expense (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Restricted Stock Unit Expense		$ 25	$ 39
Performance Stock Units Expense	[1]	12	17
Share-based Compensation		37	56
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	[2]	$ 9	$ 13

[1] Phantom stock units are settled in cash. The Company paid $44 million and $75 million during the three months ended March 31, 2019 and 2018, respectively, related to these share-based liabilities.

[2] Does not include excess tax benefits or deficiencies recognized in the Provision for income taxes in the Consolidated Statements of Income.