Loans to Banking Clients and Related Allowance for Loan Losses (Credit Quality of Residential Real Estate Mortgages and HELOCs by Reviewing FICO Scores at Origination, Current FICO Scores, Loan-To-Value Ratio) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	$ 12,467	[1]	$ 10,782	[1]
Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	7,845		6,348
Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	161		159
Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	8,006		6,507
Weighted Average Updated FICO	772		768
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	0.26%		0.38%
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	3,041		3,287
Weighted Average Updated FICO	769		767
Utilization Rate	39.00%	[2]	42.00%	[2]
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	0.24%		0.31%
Year of origination Pre 2009 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	674		867
Year of origination Pre 2009 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	51		62
Year of origination Pre 2009 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	725		929
Year of origination Pre 2009 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	2,044		2,338
Year of origination 2009 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	185		305
Year of origination 2009 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	4		6
Year of origination 2009 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	189		311
Year of origination 2009 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	260		338
Year of origination 2010 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	503		909
Year of origination 2010 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	7		12
Year of origination 2010 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	510		921
Year of origination 2010 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	191		249
Year of origination 2011 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	733		1,270
Year of origination 2011 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	38		53
Year of origination 2011 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	771		1,323
Year of origination 2011 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	155		198
Year of origination 2012 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	2,403		2,997
Year of origination 2012 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	26		26
Year of origination 2012 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	2,429		3,023
Year of origination 2012 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	162		164
Year of origination 2013 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	3,347
Year of origination 2013 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	35
Year of origination 2013 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	3,382
Year of origination 2013 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	229
Origination FICO Score Below 620 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	10		10
Origination FICO Score Below 620 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	1		1
Origination FICO Score Below 620 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	11		11
Origination FICO Score 620 Through 679 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	96		98
Origination FICO Score 620 Through 679 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	14		16
Origination FICO Score 620 Through 679 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	110		114
Origination FICO Score 620 Through 679 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	20		23
Origination FICO Score 680 Through 739 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	1,352		1,141
Origination FICO Score 680 Through 739 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	32		40
Origination FICO Score 680 Through 739 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	1,384		1,181
Origination FICO Score 680 Through 739 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	576		633
Origination FICO Score 740 And Above [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	6,387		5,099
Origination FICO Score 740 And Above [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	114		102
Origination FICO Score 740 And Above [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	6,501		5,201
Origination FICO Score 740 And Above [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	2,445		2,631
Updated FICO Score Below 620 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	50		54
Updated FICO Score Below 620 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	5		6
Updated FICO Score Below 620 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	55		60
Updated FICO Score Below 620 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	42		49
Updated FICO Score 620 Through 679 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	209		191
Updated FICO Score 620 Through 679 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	10		13
Updated FICO Score 620 Through 679 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	219		204
Updated FICO Score 620 Through 679 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	106		117
Updated FICO Score 680 Through 739 [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	1,012		940
Updated FICO Score 680 Through 739 [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	29		34
Updated FICO Score 680 Through 739 [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	1,041		974
Updated FICO Score 680 Through 739 [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	453		510
Updated FICO Score 740 And Above [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	6,574		5,163
Updated FICO Score 740 And Above [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	117		106
Updated FICO Score 740 And Above [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	6,691		5,269
Updated FICO Score 740 And Above [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	2,440		2,611
Origination Loan To Value Ratio 70% And Below [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	5,306		4,189
Origination Loan To Value Ratio 70% And Below [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	110		97
Origination Loan To Value Ratio 70% And Below [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	5,416		4,286
Origination Loan To Value Ratio 70% And Below [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	2,040		2,225
Origination Loan to Value Ratio Greater Than 70% Through 90% [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	2,523		2,142
Origination Loan to Value Ratio Greater Than 70% Through 90% [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	45		54
Origination Loan to Value Ratio Greater Than 70% Through 90% [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	2,568		2,196
Origination Loan to Value Ratio Greater Than 70% Through 90% [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	977		1,036
Origination Loan to Value Ratio Greater Than 90% Through 100% [Member] | Residential real estate mortgages, first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	16		17
Origination Loan to Value Ratio Greater Than 90% Through 100% [Member] | Residential real estate mortgages, purchased first mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	6		8
Origination Loan to Value Ratio Greater Than 90% Through 100% [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	22		25
Origination Loan to Value Ratio Greater Than 90% Through 100% [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	24		26
Estimated Current LTV 70% And Below [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	6,649		4,162
Weighted Average Updated FICO	775		772
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	0.05%		0.05%
Estimated Current LTV 70% And Below [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	2,127		1,559
Weighted Average Updated FICO	773		773
Utilization Rate	36.00%	[2]	36.00%	[2]
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	0.13%		0.14%
Estimated Current LTV Greater Than 70% through 90% [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	1,181		1,841
Weighted Average Updated FICO	763		764
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	0.34%		0.22%
Estimated Current LTV Greater Than 70% through 90% [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	664		1,020
Weighted Average Updated FICO	762		766
Utilization Rate	48.00%	[2]	46.00%	[2]
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	0.22%		0.18%
Estimated Current LTV Greater Than 90% through 100% [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	86		168
Weighted Average Updated FICO	732		750
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	4.77%		0.51%
Estimated Current LTV Greater Than 90% through 100% [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	127		267
Weighted Average Updated FICO	752		759
Utilization Rate	59.00%	[2]	54.00%	[2]
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	1.22%		0.44%
Estimated Current LTV Greater Than 100% [Member] | Residential real estate mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	90		336
Weighted Average Updated FICO	730		741
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	10.50%		5.34%
Estimated Current LTV Greater Than 100% [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans to banking clients	$ 123		$ 441
Weighted Average Updated FICO	743		753
Utilization Rate	63.00%	[2]	59.00%	[2]
Percent of Loans that are 90+ Days Past Due and Less than 90 Days Past Due but on Nonaccrual Status	1.34%		1.06%

[1] Loans are evaluated for impairment by loan segment.

[2] The Utilization Rate is calculated using the outstanding HELOC balance divided by the associated total line of credit.