Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flows from Operating Activities
Net income	$ 1,447	$ 1,321	$ 1,071
Adjustments to reconcile net income to net cash (used for) provided by operating activities:
Provision for loan losses	(11)	(4)	(1)
Net impairment losses on securities		1	10
Stock-based compensation	135	115	116
Depreciation and amortization	224	199	202
(Benefit) Provision for deferred income taxes	(7)	(25)	(21)
Premium amortization, net, on securities available for sale and securities held to maturity	162	125	162
Other	(4)	(7)	15
Net change in:
Cash and investments segregated and on deposit for regulatory purposes	1,183	2,772	4,916
Receivables from brokers, dealers, and clearing organizations	(108)	44	(175)
Receivables from brokerage clients	(1,652)	(1,725)	(496)
Other securities owned	(17)	1	119
Other assets	(98)	(30)	17
Payables to brokers, dealers, and clearing organizations	808	393	318
Payables to brokerage clients	(1,120)	(1,028)	(4,997)
Accrued expenses and other liabilities	304	196	400
Net cash provided by operating activities	1,246	2,348	1,656
Cash Flows from Investing Activities
Purchases of securities available for sale	(21,351)	(15,134)	(22,942)
Proceeds from sales of securities available for sale	2,424	6,556	6,167
Principal payments on securities available for sale	7,340	5,843	10,772
Purchases of securities held to maturity	(19,303)	(6,920)	(16,061)
Principal payments on securities held to maturity	3,540	2,687	3,895
Net increase in bank loans	(980)	(1,016)	(1,634)
Purchase of equipment, office facilities, and property	(266)	(400)	(249)
Other investing activities	(27)	(11)	2
Net cash used for investing activities	(28,623)	(8,395)	(20,050)
Cash Flows from Financing Activities
Net change in bank deposits	26,687	9,843	13,595
Repayment of commercial paper			(300)
Issuance of long-term debt	1,346		275
Repayment of long-term debt	(357)	(6)	(6)
Net proceeds from preferred stock offerings	581
Dividends paid	(387)	(373)	(368)
Proceeds from stock options exercised and other	90	189	258
Other financing activities	32	29	5
Net cash provided by financing activities	27,992	9,682	13,459
Increase (Decrease) in Cash and Cash Equivalents	615	3,635	(4,935)
Cash and Cash Equivalents at Beginning of Year	11,363	7,728	12,663
Cash and Cash Equivalents at End of Year	11,978	11,363	7,728
Cash paid during the period for:
Interest	121	103	99
Income taxes	$ 810	778	624
Non-cash investing activity:
Securities purchased during the year but settled after year end		$ 143	$ 81