BUSINESS OPERATING SEGMENTS (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Schedule of segment reporting information

	As of and for the Year Ended December 31, 2017
(in millions)	Consumer Banking		Commercial Banking		Other			Consolidated
Net interest income		$2,651		$1,411		$111			$4,173
Noninterest income	905		538		91			1,534
Total revenue	3,556		1,949		202			5,707
Noninterest expense	2,593		772		109			3,474
Profit before provision for credit losses	963		1,177		93			2,233
Provision for credit losses	265		19		37			321
Income before income tax expense (benefit)	698		1,158		56			1,912
Income tax expense (benefit)	246		384		(370		)	260
Net income		$452		$774		$426			$1,652
Total average assets		$59,714		$49,747		$40,492			$149,953

	As of and for the Year Ended December 31, 2016
(in millions)	Consumer Banking		Commercial Banking		Other			Consolidated
Net interest income		$2,443		$1,288		$27			$3,758
Noninterest income	883		466		148			1,497
Total revenue	3,326		1,754		175			5,255
Noninterest expense	2,547		741		64			3,352
Profit before provision for credit losses	779		1,013		111			1,903
Provision for credit losses	243		47		79			369
Income before income tax expense (benefit)	536		966		32			1,534
Income tax expense (benefit)	191		335		(37		)	489
Net income		$345		$631		$69			$1,045
Total average assets		$56,388		$47,159		$39,636			$143,183

	As of and for the Year Ended December 31, 2015
(in millions)	Consumer Banking		Commercial Banking			Other			Consolidated
Net interest income		$2,198		$1,162			$42			$3,402
Noninterest income	910		415			97			1,422
Total revenue	3,108		1,577			139			4,824
Noninterest expense	2,456		709			94			3,259
Profit before provision for credit losses	652		868			45			1,565
Provision for credit losses	252		(13		)	63			302
Income (loss) before income tax expense (benefit)	400		881			(18		)	1,263
Income tax expense (benefit)	138		302			(17		)	423
Net income (loss)		$262		$579			($1	)		$840
Total average assets		$52,848		$42,800			$39,422			$135,070