Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2017

Quartertly Financial Data [Abstract]

QUARTERLY FINANCIAL DATA (UNAUDITED)

(Millions, except per share amounts)			2017								2016
Quarters Ended				12/31		9/30		6/30		3/31		12/31		9/30		6/30		3/31
Total revenues net of interest expense			$	8,839	$	8,436	$	8,307	$	7,889	$	8,022	$	7,774	$	8,235	$	8,088
Pretax income				1,821		1,827		1,949		1,817		1,161		1,735		3,016		2,184
Net income (loss)				(1,197)		1,356		1,340		1,237		825		1,142		2,015		1,426
Earnings Per Common Share — Basic:
	Net income attributable to common
		shareholders^(a)	$	(1.41)	$	1.51	$	1.47	$	1.34	$	0.88	$	1.21	$	2.11	$	1.45
Earnings Per Common Share — Diluted:
	Net income attributable to common
		shareholders^(a)		(1.41)		1.50		1.47		1.34		0.88		1.20		2.10		1.45
Cash dividends declared per common share				0.35		0.35		0.32		0.32		0.32		0.32		0.29		0.29
Common share price:
		High		100.53		90.77		85.39		82.00		75.74		66.71		67.34		68.18
		Low	$	90.04	$	83.33	$	75.51	$	74.74	$	59.50	$	58.25	$	57.15	$	50.27

Represents net income, less (i) earnings allocated to participating share awards of $2 million, $11 million, $11 million and $10 million for the quarters ended December 31, September 30, June 30 and March 31, 2017, respectively, and $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 (ii) dividends on preferred shares of $20 million, $21 million, $19 million and $21 million for the quarters ended December 31, September 30, June 30 and March 31, 2017, respectively, and $19 million, $21 million, $19 million and $21 million for the quarters ended December 31, September 30, June 30 and March 31, 2016, respectively.