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Schedule II - Condensed Statements Of Cash Flows (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Fees and reimbursements received | $ 281 | $ 397 | $ 533
Investment income received | 594 | 898 | 997
Operating expenses paid | (400) | (312) | (274)
Interest paid, net of interest converted to principal | (400) | (479) | (574)
Income taxes (paid) received | (6) | 74 | 414
Net cash provided (used) by operating activities | (1,027) | (2,627) | (946)
Purchase of fixed-maturity securities | (4,463) | (7,744) | (9,967)
Sale and redemption of fixed-maturity securities | 6,873 | 11,321 | 11,896
Sale (purchase) of short-term investments, net | 1,012 | 680 | 662
Sale (purchase) of other investments, net | 114 | 73 | 53
(Payments) proceeds for derivative settlements | (288) | (373) | (216)
Collateral (to) from swap counterparty | (285) |  | 166
Net cash provided (used) by investing activities | 4,195 | 4,007 | 4,778
Proceeds from investment agreements | 36 | 71 | 45
Payments for drawdowns of investment agreements | (688) | (524) | (767)
Payments for securities sold under agreements to repurchase | (287) | (184) | (31)
Payments for retirement of debt | (540) | (65) | (393)
Purchase of treasury stock |  | (50) | (31)
Restricted stock awards settlements, net | 1 | (2) | 2
Net cash provided (used) by financing activities | (2,811) | (1,877) | (3,505)
Net increase (decrease) in cash and cash equivalents | 357 | (497) | 327
Cash and cash equivalents-beginning of period | 633 | 1,130 | 803
Cash and cash equivalents-end of period | 990 | 633 | 1,130
Net income (loss) | 1,234 | (1,319) | 53
Current income taxes | (5) | 86 | 501
Net investment losses related to other-than-temporary impairments | 105 | 101 | 64
Net (gains) losses on financial instruments at fair value and foreign exchange | (73) | 40 | (430)
Other net realized (gains) losses | (7) | (262) | 47
Deferred income tax benefit | 365 | (935) | (221)
Other operating | 257 | 408 | 265
Total adjustments to net income (loss) | (2,261) | (1,308) | (999)
Net cash provided (used) by operating activities | (1,027) | (2,627) | (946)
Parent Company [Member] |  |  |
Fees and reimbursements received | 5 | 31 |
Investment income received | 118 | 89 | 145
Operating expenses paid | (43) | (30) | (28)
Interest paid, net of interest converted to principal | (101) | (107) | (115)
Income taxes (paid) received | 224 | 353 | 149
Net cash provided (used) by operating activities | 203 | 336 | 151
Purchase of fixed-maturity securities | (1,017) | (3,737) | (6,259)
Sale and redemption of fixed-maturity securities | 2,370 | 4,651 | 7,288
Sale (purchase) of short-term investments, net | 375 | 251 | 363
Sale (purchase) of other investments, net | 107 | 81 | 55
(Payments) proceeds for derivative settlements | (207) | (85) | 16
Collateral (to) from swap counterparty | (285) |  | 166
Contributions to subsidiaries | (12) |  | (35)
Advances to subsidiaries, net | 1 | (19) | (21)
Net cash provided (used) by investing activities | 1,332 | 1,142 | 1,573
Proceeds from investment agreements | 31 | 65 | 39
Payments for drawdowns of investment agreements | (679) | (500) | (735)
Payments for securities sold under agreements to repurchase | (639) | (835) | (618)
Payments for retirement of debt | (180) | (70) | (43)
Payments for affiliate loans | (109) | (37) | (405)
Purchase of treasury stock |  | (50) | (30)
Restricted stock awards settlements, net | 1 | (2) | 2
Net cash provided (used) by financing activities | (1,575) | (1,429) | (1,790)
Net increase (decrease) in cash and cash equivalents | (40) | 49 | (66)
Cash and cash equivalents-beginning of period | 132 | 83 | 149
Cash and cash equivalents-end of period | 92 | 132 | 83
Net income (loss) | 1,234 | (1,376) | (3)
Intercompany accounts receivable | (9) | (10) | 41
Current income taxes | 57 | 124 | 56
Equity in earnings of subsidiaries | (762) | 1,233 | (99)
Dividends from subsidiaries | 60 | 46 | 19
Net investment losses related to other-than-temporary impairments | 59 | 33 | 59
Net (gains) losses on financial instruments at fair value and foreign exchange | 119 | 278 | 117
Other net realized (gains) losses | (6) | 17 | (1)
Deferred income tax benefit | (613) | (85) | (90)
(Gains) losses on extinguishment of debt | 2 |  | 1
Other operating | 62 | 76 | 51
Total adjustments to net income (loss) | (1,031) | 1,712 | 154
Net cash provided (used) by operating activities | $ 203 | $ 336 | $ 151

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