Long-Term Debt (Schedule of Aggregate Maturities of Long-Term Debt Obligations) (Detail) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015	[2]
Debt Instrument
Contractually obligated payments for long-term debt due in 2017		$ 1,156
Contractually obligated payments for long-term debt due in 2018		2,643
Contractually obligated payments for long-term debt due in 2019		3,281
Contractually obligated payments for long-term debt due in 2020		1,643
Contractually obligated payments for long-term debt due in 2021		2,196
Thereafter		3,469
Total	[1]	14,388	$ 15,810
Parent Company
Debt Instrument
Contractually obligated payments for long-term debt due in 2017		501
Contractually obligated payments for long-term debt due in 2018		519
Contractually obligated payments for long-term debt due in 2019		499
Contractually obligated payments for long-term debt due in 2020		1,096
Contractually obligated payments for long-term debt due in 2021		0
Thereafter		2,555
Total		5,170
Subsidiaries
Debt Instrument
Contractually obligated payments for long-term debt due in 2017		655
Contractually obligated payments for long-term debt due in 2018		2,124
Contractually obligated payments for long-term debt due in 2019		2,782
Contractually obligated payments for long-term debt due in 2020		547
Contractually obligated payments for long-term debt due in 2021		2,196
Thereafter		914
Total		$ 9,218

[1] Includes $ 85 and $ 152 of cash and due from banks, $ 1,216 and $ 2,537 of portfolio loans and leases, $ (26) and $ (28) of ALLL, $ 9 and $ 14 of other assets, $ 3 and $ 3 of other liabilities and $ 1,094 and $ 2,487 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2016 and 2015 , respectively. For further information, refer to Note 11.

[2] Upon adoption of ASU 2015-03 on January 1, 2016, the December 31, 2015 Consolidated Balance Sheet was adjusted to reflect the reclassification of $34 of debt issuance costs from other assets to long-term debt. For further inform ation refer to Note 1 .