Summary of Quarterly Financial Statements (Unaudited) Summary of Quarterly Financial Statements (Unaudited ) (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Statements

The following quarterly information is unaudited. However, in the opinion of management, the information reflects all adjustments, which are necessary for the fair presentation of the results of operations, for the periods presented.

	2017
(in millions, except per share data)	Fourth Quarter		Third Quarter			Second Quarter			First Quarter
Interest income	$	578	$	579		$	529		$	496
Interest expense	33		33			29			26
Net interest income	545		546			500			470
Provision for credit losses	17		24			17			16
Net securities losses	—		(1		)	(2		)	—
Noninterest income excluding net securities losses	285		276			278			271
Noninterest expenses	483		463			457			457
Provision for income taxes	218		108			99			66
Net income	112		226			203			202
Less income allocated to participating securities	—		2			1			2
Net income attributable to common shares	$	112	$	224		$	202		$	200
Earnings per common share:
Basic	$	0.65	$	1.29		$	1.15		$	1.15
Diluted	0.63		1.26			1.13			1.11
Comprehensive income	107		228			221			206

	2016
(in millions, except per share data)	Fourth Quarter			Third Quarter		Second Quarter			First Quarter
Interest income	$	484		$	480	$	473		$	472
Interest expense	29			30		28			25
Net interest income	455			450		445			447
Provision for credit losses	35			16		49			148
Net securities losses	(2		)	—		(1		)	(2		)
Noninterest income excluding net securities losses	269			272		269			246
Noninterest expenses	461			493		518			458
Provision for income taxes	62			64		42			25
Net income	164			149		104			60
Less income allocated to participating securities	1			1		1			1
Net income attributable to common shares	$	163		$	148	$	103		$	59
Earnings per common share:
Basic	$	0.95		$	0.87	$	0.60		$	0.34
Diluted	0.92			0.84		0.58			0.34
Comprehensive income	73			152		137			161