Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quartertly Financial Data [Abstract]

(Millions, except per share amounts)			2016								2015
Quarters Ended				12/31		9/30		6/30		3/31		12/31		9/30		6/30		3/31
Total revenues net of interest expense			$	8,022	$	7,774	$	8,235	$	8,088	$	8,391	$	8,193	$	8,284	$	7,950
Pretax income				1,161		1,735		3,016		2,184		1,454		1,938		2,230		2,316
Net income				825		1,142		2,015		1,426		899		1,266		1,473		1,525
Earnings Per Common Share — Basic:
	Net income attributable to common
		shareholders^(a)	$	0.88	$	1.21	$	2.11	$	1.45	$	0.89	$	1.24	$	1.43	$	1.49
Earnings Per Common Share — Diluted:
	Net income attributable to common
		shareholders^(a)		0.88		1.20		2.10		1.45		0.89		1.24		1.42		1.48
Cash dividends declared per common share				0.32		0.32		0.29		0.29		0.29		0.29		0.29		0.26
Common share price:
		High		75.74		66.71		67.34		68.18		77.85		81.66		81.92		93.94
		Low	$	59.50	$	58.25	$	57.15	$	50.27	$	67.57	$	71.71	$	76.53	$	77.12

Represents net income, less (i) earnings allocated to participating share awards of $6 million, $9 million, $17 million and $11 million for the quarters ended December 31, September 30, June 30 and March 31, 2016, respectively, and $6 million, $10 million, $11 million and $11 million for the quarters ended December 31, September 30, June 30 and March 31, 2015, respectively, and (ii) dividends on preferred shares of $19 million, $21 million, $19 million and $21 million for the quarters ended December 31, September 30, June 30 and March 31, 2016, respectively, and $20 million, $22 million, $20 million and nil for the quarters ended December 31, September 30, June 30 and March 31, 2015, respectively.