Consolidated Statements Of Cash Flows (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income (loss)	$ (693)	$ (398)
Adjustments to reconcile net income (loss) to net cash provided (used) by operating activities:
Accrued investment income	4	(9)
Premiums receivable	182	180
Deferred acquisition costs	48	45
Unearned premium revenue	(495)	(466)
Prepaid reinsurance premiums	6	72
Reinsurance premiums payable	(7)	(39)
Loss and loss adjustment expense reserves	(198)	(273)
Reinsurance recoverable on paid and unpaid losses	(3)	(15)
Insurance loss recoverable	(239)	(438)
Payable to reinsurers on recoveries	7	(72)
Accrued interest payable	(29)	(16)
Accounts receivable	(6)	3
Accrued expenses	3	6
Deferred fee revenue	(1)	(1)
Current income taxes	74	512
Amortization of bond (premiums) discounts, net	(13)	(27)
Depreciation	6	6
Amortization of medium-term notes (premiums) discounts, net	(9)	5
Net investment losses related to other-than-temporary impairments	44	43
Realized (gains) losses and other settlements on insured derivatives		(607)
Unrealized (gains) losses on insured derivatives	531	1,717
Net (gains) losses on financial instruments at fair value and foreign exchange	111	(358)
Other net realized (gains) losses	(14)	56
Deferred income tax benefit	(497)	(324)
(Gains) losses on extinguishment of debt	(26)	(46)
Share-based compensation	11	1
Other operating	3	21
Total adjustments to net income (loss)	(507)	(24)
Net cash provided (used) by operating activities	(1,200)	(422)
Cash flows from investing activities:
Purchase of fixed-maturity securities	(5,590)	(7,792)
Sale and redemption of fixed-maturity securities	7,096	9,539
Decrease in loans receivable	223	778
Purchase of held-to-maturity investments		(71)
Redemptions of held-to-maturity investments	153	632
Sale (purchase) of short-term investments, net	968	(8)
Sale of other investments, net	26	9
Purchase of controlling interest in an affiliate, net of cash received		(27)
Consolidation/deconsolidation of variable interest entities, net	(16)	531
(Payments) proceeds for derivative settlements	(66)	19
Capital expenditures	(3)	(3)
Disposals of capital assets		1
Net cash provided (used) by investing activities	2,791	3,608
Cash flows from financing activities:
Proceeds from issuance of investment agreements	89	75
Payments for drawdowns of investment agreements	(453)	(480)
Issuance of medium-term notes	17	18
Principal paydown of medium-term notes	(107)	(416)
Principal paydown of variable interest entity notes	(829)	(1,530)
Securities sold under agreements to repurchase	(84)	(31)
Dividends paid		(1)
Repayments for retirement of debt	(72)	(315)
Purchase of treasury stock	(50)	(31)
Contribution from noncontrolling interest and redemption of subsidiary preferred stock, net	9	(29)
Restricted stock awards settlements	(2)	3
Collateral from swap counterparty		164
Net cash provided (used) by financing activities	(1,482)	(2,573)
Net increase in cash and cash equivalents	109	613
Cash and cash equivalents - beginning of period	1,130	803
Cash and cash equivalents - end of period	1,239	1,416
Supplemental cash flow disclosures:
Income taxes refunded	(54)	(422)
Interest paid:
Investment agreements	25	29
Medium-term notes	27	28
Variable interest entity notes	202	267
Securities sold under agreements to repurchase	1	1
Other borrowings and deposits	3	3
Long-term debt	173	178
Non cash items:
Share-based compensation	$ 11	$ 1