This item represents the amount of the total changes due to adoption of new accounting standards for the period related to the fair value of assets measured on a recurring basis using significant unobservable inputs (Level 3).

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This item represents the amount of the total changes due to adoption of new accounting standards for the period related to the fair value of liabilities measured on a recurring basis using significant unobservable inputs (Level 3).

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This element represents consolidations (deconsolidations), net which have taken place during the period in relation to assets measured at fair value on a recurring basis using unobservable inputs (Level 3).

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- Definition

This element represents total net unrealized gains or losses for the period relating to instruments still held at the reporting date, arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings.

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- Definition

This element represents assets measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances before the adjustment for adoption of new accounting standard.

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- Definition

Represents amounts related to consolidated VIEs for assets measured at fair value on a recurring basis using unobservable inputs (Level 3).

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- Definition

Represents amounts related to consolidated VIEs for liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3).

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- Definition

This element represents total net unrealized gains or losses for the period relating to instruments still held at the reporting date, arising from liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings.

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- Definition

Represents the number of securities whose prices were determined to be reduced based on cash flow analysis by third party pricing services agency.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity).

+ References

+ Details

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- Definition

Purchases that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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- Definition

This element represents purchases, sales, issuances, and settlements (net) which have taken place during the period in relation to assets measured at fair value on a recurring basis using unobservable inputs (Level 3).

+ References

+ Details

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- Definition

Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

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- Definition

Settlements that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

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- Definition

Transfers into assets measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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- Definition

This element represents [net] transfers in to and out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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Settlements that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

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Fair Value Measurement (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2009
Fair Value Level 3 Rollforward
Number of securities whose prices were determined to be reduced based on cash flow analysis by third party pricing services agency			1
Level 3 \| RMBS
Fair Value Level 3 Roll forward
Balance at the beginning of the period	$ 88.0	$ 102.9	$ 99.4
Total pre-tax realized/unrealized gains/(losses) recorded in
Net income (loss)	6.0	(4.9)	(25.3)	0.7
Other comprehensive income (loss)	(36.8)	22.1	(84.5)	(37.5)
Purchases, issuances, sales, settlements, net		(4.4)		88.7
Purchases	42.8		195.0
Sales	(8.1)		(29.1)
Transfers in and/or out of Level 3				63.8
VIE Consolidations			(63.6)
Balance, at the end of the period	91.9	115.7	91.9	115.7
Fair Value Level 3 Rollforward
Change in unrealized gains/(losses) related to financial instruments held at the reporting date	(36.8)	22.1	(84.5)	(37.5)
Level 3 \| Asset-backed securities
Fair Value Level 3 Roll forward
Balance before adjustment, at the beginning of period				203.9
Balance at the beginning of the period	273.9	230.3	210.2	203.9
Total pre-tax realized/unrealized gains/(losses) recorded in
Net income (loss)	(7.4)	(0.2)	(3.7)	(15.4)
Other comprehensive income (loss)	(15.1)	(8.3)	(2.1)	0.8
Purchases, issuances, sales, settlements, net		7.1		20.8
Purchases			47.1
Sales	(0.9)		(1.0)
Transfers in and/or out of Level 3				18.8
Balance, at the end of the period	250.5	228.9	250.5	228.9
Fair Value Level 3 Rollforward
Change in unrealized gains/(losses) related to financial instruments held at the reporting date	(15.1)	(8.3)	(2.1)	0.8
Level 3 \| Other invested assets
Fair Value Level 3 Roll forward
Balance before adjustment, at the beginning of period				0.2
Balance at the beginning of the period	2.0	2.6	2.3	0.2
Total pre-tax realized/unrealized gains/(losses) recorded in
Other comprehensive income (loss)	(0.1)	(0.2)	(0.4)	(0.4)
Purchases, issuances, sales, settlements, net				2.6
Balance, at the end of the period	1.9	2.4	1.9	2.4
Fair Value Level 3 Rollforward
Change in unrealized gains/(losses) related to financial instruments held at the reporting date	(0.1)	2.7	(0.4)	2.4
Level 3 \| FG VIEs' assets, at fair value
Fair Value Level 3 Roll forward
Adoption of new accounting standard					1,925.3
Balance at the beginning of the period	3,492.2	1,844.7	3,657.5	1,925.3
Total pre-tax realized/unrealized gains/(losses) recorded in
Net income (loss)	(312.5)	79.6	(289.7)	62.6
Purchases, issuances, sales, settlements, net		(49.7)		(164.2)
Settlements	(174.3)		(644.8)
Consolidations, Deconsolidations, net		422.1		473.0
VIE Consolidations			282.4
Balance, at the end of the period	3,005.4	2,296.7	3,005.4	2,296.7	1,925.3
Fair Value Level 3 Rollforward
Change in unrealized gains/(losses) related to financial instruments held at the reporting date	(180.1)	123.9	168.2	220.4
Level 3 \| Other assets.
Total pre-tax realized/unrealized gains/(losses) recorded in
Net income (loss)	2.4		2.4
Transfers into Level 3	19.8		19.8
Balance, at the end of the period	22.2		22.2
Fair Value Level 3 Rollforward
Change in unrealized gains/(losses) related to financial instruments held at the reporting date	2.4		2.4
Level 3 \| Credit derivative asset (liability), net
Fair Value Level 3 Roll forward
Balance at the beginning of the period	(2,187.5)	(1,274.9)	(1,869.9)	(1,542.1)
Total pre-tax realized/unrealized gains/(losses) recorded in
Net income (loss)	1,155.9	(224.0)	854.9	128.3
Purchases, issuances, sales, settlements, net		(197.7)		(282.8)
Settlements	3.5
Balance, at the end of the period	(1,028.1)	(1,696.6)	(1,028.1)	(1,696.6)
Fair Value Level 3 Rollforward
Settlements			(13.1)
Change in unrealized gains/(losses) related to financial instruments held at the reporting date	1,159.3	(277.1)	847.6	17.5
Level 3 \| FG VIEs' liabilities with recourse, at fair value
Fair Value Level 3 Roll forward
Balance at the beginning of the period	(2,848.9)	(2,107.5)	(3,030.9)	(2,110.9)
Total pre-tax realized/unrealized gains/(losses) recorded in
Net income (loss)	97.6	146.2	101.4	158.5
Purchases, issuances, sales, settlements, net		23.4		86.0
Settlements	175.7
Consolidations, Deconsolidations, net		(383.0)		(454.5)
VIE Consolidations			(272.4)
Balance, at the end of the period	(2,575.6)	(2,320.9)	(2,575.6)	(2,320.9)	(2,110.9)
Fair Value Level 3 Rollforward
Adoption of new accounting standard					(2,110.9)
Settlements			626.3
Change in unrealized gains/(losses) related to financial instruments held at the reporting date	97.5	131.0	95.1	(119.9)
Level 3 \| FG VIEs' liabilities without recourse, at fair value
Fair Value Level 3 Roll forward
Balance at the beginning of the period	(1,282.5)	(184.9)	(1,337.2)	(226.0)
Total pre-tax realized/unrealized gains/(losses) recorded in
Net income (loss)	89.4	19.5	40.4	27.0
Purchases, issuances, sales, settlements, net		(16.0)		17.6
Settlements	60.1
Consolidations, Deconsolidations, net		(55.5)		(55.5)
VIE Consolidations			(63.1)
Balance, at the end of the period	(1,133.0)	(236.9)	(1,133.0)	(236.9)	(226.0)
Fair Value Level 3 Rollforward
Adoption of new accounting standard					(226.0)
Settlements			226.9
VIE Consolidations			(63.1)
Change in unrealized gains/(losses) related to financial instruments held at the reporting date	$ 60.2	$ 60.2	$ (111.8)	$ 1.5