Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Cash Flows from Operating Activities
Net income	$ 1,889		$ 1,447		$ 1,321
Adjustments to reconcile net income to net cash (used for) provided by operating activities:
Provision for loan losses	(5)		(11)		(4)
Net impairment losses on securities					1
Share-based compensation	141		135		115
Depreciation and amortization	234		224		199
(Benefit) provision for deferred income taxes	15		(7)		(25)
Premium amortization, net, on securities available for sale and securities held to maturity	266		162		125
Other	9		(4)		(7)
Net change in:
Cash and investments segregated and on deposit for regulatory purposes	(2,576)		1,183		2,772
Receivables from brokers, dealers, and clearing organizations	(147)		(108)		44
Receivables from brokerage clients	150		(1,652)		(1,725)
Other securities owned	84		(17)		1
Other assets	(93)		(98)		(30)
Payables to brokers, dealers, and clearing organizations	(181)		808		393
Payables to brokerage clients	2,709		(1,120)		(1,028)
Accrued expenses and other liabilities	167		304		196
Net cash provided by operating activities	2,662		1,246		2,348
Cash Flows from Investing Activities
Purchases of securities available for sale	(29,248)		(21,351)		(15,134)
Proceeds from sales of available for sale securities	5,537		2,424		6,556
Principal payments on available for sale securities	11,903		7,340		5,843
Purchases of securities held to maturity	(31,162)		(19,303)		(6,920)
Principal payments on held to maturity securities	5,747		3,540		2,687
Net increase in bank loans	(1,103)		(980)		(1,016)
Purchase of equipment, office facilities, and property	(346)		(266)		(400)
Purchases of Federal Home Loan Bank stock	(152)
Proceeds from sales of Federal Home Loan Bank stock	88		8
Other investing activities	(39)		(35)		(11)
Net cash used for investing activities	(38,775)		(28,623)		(8,395)
Cash Flows from Financing Activities
Net change in bank deposits	33,952		26,687		9,843
Proceeds from short-term Federal Home Loan Bank borrowings	8,504
Repayment of short-term Federal Home Loan Bank borrowings	(8,504)
Issuance of long-term debt			1,346
Repayment of long-term debt	(7)		(357)		(6)
Net proceeds from preferred stock offerings	1,316		581
Dividends paid	(486)		(387)		(373)
Proceeds from stock options exercised and other	144		90		189
Other financing activities	44		32		29
Net cash provided by financing activities	34,963		27,992		9,682
Increase (Decrease) in Cash and Cash Equivalents	(1,150)		615		3,635
Cash and Cash Equivalents at Beginning of Year	11,978	[1]	11,363		7,728
Cash and Cash Equivalents at End of Year	10,828		11,978	[1]	11,363
Cash paid during the period for:
Interest	160		121		103
Income taxes	$ 991		$ 810		778
Non-cash investing activity:
Securities purchased during the year but settled after year end					$ 143

[1] Adjusted for the retrospective adoption of ASU 2015-03. See New Accounting Standards in Note 2 for additional information.