Investments and Derivative Instruments (Details 4) (USD $) In Millions	Jun. 30, 2011
Available-for-sale Securities, Debt Maturities, Amortized Cost
One year or less, Amortized Cost	$ 2,545
Over one year through five years, Amortized Cost	16,181
Over five years through ten years, Amortized Cost	14,627
Over ten years, Amortized Cost	24,688
Subtotal	58,041
Mortgage-backed and asset-backed securities, Amortized Cost	19,326
Total, Amortized Cost, Fixed Maturities, AFS	77,367
Available-for-sale Securities, Debt Maturities, Fair Value
One year or less, Fair Value	2,573
Over one year through five years, Fair Value	17,009
Over five years through ten years, Fair Value	15,312
Over ten years, Fair Value	24,875
Subtotal	59,769
Mortgage-backed and asset-backed securities, Fair Value	18,363
Total, Fair Value	$ 78,132

Available For Sale Securities Debt Maturities Before Mortgage Backed And Asset Backed Securities Amortized Cost.

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Available For Sale Securities Debt Maturities Before Mortgage Backed And Asset Backed Securities Fair Value.

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Mortgage backed and asset backed securities amortized cost.

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Mortgage-backed and asset-backed securities fair value.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 20
-Subparagraph c

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 20
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-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 20
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-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 20
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 20

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This item represents the fair value of debt securities which are expected to mature within one year of the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

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