Financing Receivables: (Details 4) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Impaired client loan receivables
Recorded Investment	$ 151		$ 172
Related Allowance	125		123
Average Recorded Investment	162	310
Interest Income Recognized	0	1
Interest Income Recognized on Cash Basis	0	0
Major Markets
Impaired client loan receivables
Recorded Investment	86		110
Related Allowance	72		70
Average Recorded Investment	98	176
Interest Income Recognized	0	0
Interest Income Recognized on Cash Basis	0	0
Growth Markets
Impaired client loan receivables
Recorded Investment	66		62
Related Allowance	53		53
Average Recorded Investment	64	134
Interest Income Recognized	0	0
Interest Income Recognized on Cash Basis	$ 0	$ 0

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The average recorded investment related to impaired financing receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5212-111524

-Subparagraph (c)(1)

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5258-111524

+ Details

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- Definition

The interest income recognized during the time within that period that the financing receivables were impaired.

+ References

+ Details

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- Definition

The interest income recognized on a cash-basis method of accounting during the time within that period that the financing receivables were impaired.

+ References

+ Details

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- Definition

The recorded investment related to impaired financing receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953550-111524

-Subparagraph (b)

+ Details

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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