Deferred Income Taxes Included in Other Assets in the Consolidated Balance Sheets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Deferred Income Tax Assets And Liabilities [Abstract]
Allowance for loan & lease losses	$ 554	$ 649
Deferred compensation	109	105
Reserves	101	63
Reserve for unfunded commitments	57	47
Impairment reserves	31	74
State net operating losses	22	33
Other	149	191
Total deferred tax assets	1,023	1,162
Lease financing	865	844
Investments in joint ventures and partnership interests	381	470
MSRs	254	162
Bank premises and equipment	114	108
Qualifying Hedges And Free Standing Derivatives	97	31
State deferred taxes	76	64
Other comprehensive income	44	202
Other	130	124
Total deferred tax liabilities	1,961	2,005
Total net deferred tax liability	$ (938)	$ (843)