Consolidated Balance Sheet (Parenthetical) - USD ($) shares in Millions, $ in Millions		Mar. 31, 2016	Dec. 31, 2015
Cash and due from banks		$ 3,861.0	$ 4,065.0	[1]
Interest-earning deposits with banks		29,478.0	30,546.0	[1]
Net loans		204,774.0	203,969.0	[1]
Equity investments	[1]	10,391.0	10,587.0
Other assets	[1],[2]	24,585.0	23,092.0
Other borrowed funds	[3],[4]	2,324.0	2,793.0
Accrued expenses	[4]	4,850.0	4,975.0
Other liabilities	[4]	4,988.0	3,743.0
Total liabilities		$ 314,657.0	$ 312,513.0
Common stock, par value		$ 5	$ 5
Common stock, authorized		800	800
Common stock, issued		542	542
Common stock held in treasury at cost, shares		43	38
Preferred stock (e)	[5]	$ 0.5	$ 0.5
Portion at Fair Value, Fair Value Disclosure
Federal funds sold and resale agreements, fair value	[2]	138.0	137.0
Loans held for sale, fair value	[2]	1,400.0	1,500.0
Loans, Fair Value	[2]	900.0	900.0
Other assets, fair value	[2]	375.0	521.0
Other borrowed funds, fair value	[3]	63.0	93.0
Variable Interest Entity, Primary Beneficiary [Member]
Cash and due from banks	[1]		11.0
Interest-earning deposits with banks	[1]		4.0
Net loans	[1]		1,300.0
Equity investments	[1]	326.0	183.0
Other assets	[1]	41.0	402.0
Other borrowed funds	[4]		148.0
Accrued expenses	[4]		44.0
Other liabilities	[4]		202.0
Total liabilities		$ 9.0	$ 394.0

[1] Our consolidated assets at March 31, 2016 included the following assets of certain variable interest entities (VIEs): Equity investments of $326 million and Other assets of $41 million. Our consolidated assets at December 31, 2015 included the following assets of certain VIEs: Cash and due from banks of $11 million, Interest-earning deposits with banks of $4 million, Net loans of $1.3 billion, Equity investments of $183 million, and Other assets of $402 million.

[2] Our consolidated assets at March 31, 2016 included the following for which we have elected the fair value option: Federal funds sold and resale agreements of $138 million, Loans held for sale of $1.4 billion, Loans of $.9 billion, and Other assets of $375 million. Our consolidated assets at December 31, 2015 included the following for which we have elected the fair value option: Federal funds sold and resale agreements of $137 million, Loans held for sale of $1.5 billion, Loans of $.9 billion, and Other assets of $521 million.

[3] Our consolidated liabilities at March 31, 2016 and December 31, 2015 included Other borrowed funds of $63 million and $93 million, respectively, for which we have elected the fair value option.

[4] Our consolidated liabilities at March 31, 2016 included liabilities of $9 million for certain VIEs. Our consolidated liabilities at December 31, 2015 included the following liabilities of certain VIEs: Other borrowed funds of $148 million, Accrued expenses of $44 million, and Other liabilities of $202 million.

[5] Par value less than $.5 million at each date.