Consolidated Income Statement - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest Income
Loans	$ 7,203,000,000	$ 7,427,000,000	$ 7,866,000,000
Investment securities	1,679,000,000	1,624,000,000	1,749,000,000
Other	441,000,000	380,000,000	392,000,000
Total interest income	9,323,000,000	9,431,000,000	10,007,000,000
Interest Expense
Deposits	403,000,000	325,000,000	344,000,000
Borrowed funds	642,000,000	581,000,000	516,000,000
Total interest expense	1,045,000,000	906,000,000	860,000,000
Net interest income	8,278,000,000	8,525,000,000	9,147,000,000
Noninterest Income
Asset management	1,567,000,000	1,513,000,000	1,342,000,000
Consumer services	1,335,000,000	1,254,000,000	1,253,000,000
Corporate services	1,491,000,000	1,415,000,000	1,210,000,000
Residential mortgage	566,000,000	618,000,000	871,000,000
Service charges on deposits	651,000,000	662,000,000	597,000,000
Net gains on sales of securities	43,000,000	4,000,000	99,000,000
Other	1,294,000,000	1,384,000,000	1,493,000,000
Total noninterest income	6,947,000,000	6,850,000,000	6,865,000,000
Total revenue	15,225,000,000	15,375,000,000	16,012,000,000
Provision For Credit Losses	255,000,000	273,000,000	643,000,000
Noninterest Expense
Personnel	4,831,000,000	4,611,000,000	4,743,000,000
Occupancy	842,000,000	833,000,000	833,000,000
Equipment	925,000,000	859,000,000	763,000,000
Marketing	249,000,000	253,000,000	246,000,000
Other	2,616,000,000	2,932,000,000	3,096,000,000
Total noninterest expense	9,463,000,000	9,488,000,000	9,681,000,000
Income (loss) before income taxes and noncontrolling interests	5,507,000,000	5,614,000,000	5,688,000,000
Income taxes	1,364,000,000	1,407,000,000	1,476,000,000
Net income	4,143,000,000	4,207,000,000	4,212,000,000
Net income (loss) attributable to noncontrolling interests	37,000,000	23,000,000	11,000,000
Preferred stock dividends	220,000,000	232,000,000	237,000,000
Preferred stock discount accretion and redemptions	5,000,000	5,000,000	12,000,000
Net income attributable to common shareholders	$ 3,881,000,000	$ 3,947,000,000	$ 3,952,000,000
Earnings Per Common Share
Basic	$ 7.52	$ 7.44	$ 7.45
Diluted	$ 7.39	$ 7.3	$ 7.36
Average Common Shares Outstanding
Basic	514	529	528
Diluted	521	537	532