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This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets). Such unrealized (holding) gains or losses relate to those liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

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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.

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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.

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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.

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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.

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This element represents the fair value of securities transferred from Level 2 of the fair value measurement hierarchy to Level 3 (unobservable inputs).

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This element represents the fair value of securities transferred from Level 3 (unobservable inputs) to Level 2 of the fair value measurement hierarchy.

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This element represents cumulative effect of accounting changes on assets and liabilities, measured at fair value on a recurring basis using unobservable inputs (Level 3).

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

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Issues 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.

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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.

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This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in investment income. Such unrealized (holding) gains or losses relate to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

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-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
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This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in other income. Such unrealized (holding) gains or losses relate to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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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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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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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).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c

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This element represents total gains or losses for the period (realized and unrealized), arising from liabilities 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)
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-Paragraph 32
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This element represents purchases, sales, issuances, and settlements (net) which have taken place during the period in relation to liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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Consolidated Investment Entities (Details 3) (Consolidated Investment Entities., USD $) In Millions	3 Months Ended	6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2010 Corporate debt securities	Jun. 30, 2011 Corporate debt securities	Jun. 30, 2010 Corporate debt securities	Mar. 31, 2011 Corporate debt securities	Jun. 30, 2011 Common Shares	Jun. 30, 2010 Common Shares	Jun. 30, 2011 Common Shares	Jun. 30, 2010 Common Shares	Jun. 30, 2011 Other structured investments	Jun. 30, 2010 Other structured investments	Jun. 30, 2011 Other structured investments	Jun. 30, 2010 Other structured investments	Jun. 30, 2011 Syndicated loans	Jun. 30, 2011 Syndicated loans	Jun. 30, 2011 Other assets	Jun. 30, 2010 Other assets	Jun. 30, 2011 Other assets	Jun. 30, 2010 Other assets	Jun. 30, 2011 Debt.	Jun. 30, 2010 Debt.	Jun. 30, 2011 Debt.	Jun. 30, 2010 Debt.
Summary of changes in Level 3 assets and liabilities held by consolidated investment entities
Balance, at the beginning of the period	$ 15	$ 6		$ 6	$ 26		$ 11			$ 6	$ 22		$ 216		$ 920	$ 870	$ 887	$ 831
Balance, at the beginning of the period																			(5,333)	(5,144)	(5,171)
Cumulative effect of accounting change			15									5										(4,962)
Total Gains (Losses) Included in Net Income-Assets	(1)		(1)		(1)	1	5	1		(1)	(1)	1		4		35	4	72
Total Gains (Losses) Included in Net Income-Liabilities																			(31)	77	(215)	(106)
Total Gains (Losses) Included in Net Income-Assets and included in Other Revenues in the Consolidated Statement of Operations																36		73
Total Gains (Losses) Included in Net Income-Assets and included in Net Investment Income in the Consolidated Statement of Operations																(1)		(1)
Total Gains (Losses) Included in Other Comprehensive Income-Assets															1	(14)	25	(64)
Purchases, Net-Assets									3		3		68	93	184		196
Sales		(1)											(4)	(6)			(15)
Settlements, Net-Assets													(54)	(56)			1
Purchases, Sales, Issues and Settlements, Net	(8)		(8)			3		3		5		4				(209)		(157)
Issues, Net-Liabilities																			(17)		(27)
Settlements, Net-Liabilities																			147		179
Purchases, Sales, Issues and Settlements, Net-Liabilities																				19		20
Transfers into (out of) Level 3		1			(2)		7				(21)		20	211	(8)		(1)
Balance, at the end of the period	6	6	6	6	23	4	23	4	3	10	3	10	246	246	1,097	682	1,097	682
Balance, at the end of the period																			(5,234)	(5,048)	(5,234)	(5,048)
Changes in unrealized gains/ (losses) included in income relating to assets held					(1)	1	3	1			(1)	1	1	3		5	(1)	42
Changes in unrealized gains/ (losses) included in income relating to liabilities held																			(27)	77	(211)	(106)
Changes in unrealized gains/ (losses) included in income relating to assets held-other revenue																6		43
Changes in unrealized gains/ (losses) included in income relating to assets held-investment income																(1)		(1)
Fair value securities transferred to Level 2					5		7						47	47			8
Fair value securities transferred to Level 3					$ 3		$ 14						$ 67	$ 258			$ 7