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Fair Value Measurements (Details 2) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
US Treasury and Government [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | $ 15 | $ 15 | $ 15 | $ 15
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | 0 | 0 | 0 | 0
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | 0 | 0 | 0 | 0
Purchases and issuances | 0 | 0 | 0 | 0
Sales and settlements | 0 | 0 | 0 | 0
Transfer into Level 3 | 0 | 0 | 0 | 0
Transfer out of Level 3 | 0 | 0 | 0 | 0
Financial assets, Ending Balance | 15 | 15 | 15 | 15
States, municipalities and political subdivisions [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 84 | 61 | 100 | 61
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | 0 | (1) | 0 | (1)
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | 1 | (1) | (1) | (1)
Purchases and issuances | 9 | 0 | 34 | 0
Sales and settlements | (1) | 0 | (1) | 0
Transfer into Level 3 | 0 | 7 | 0 | 7
Transfer out of Level 3 | 0 | 0 | (39) | 0
Financial assets, Ending Balance | 93 | 66 | 93 | 66
Residential Mortgage Backed Securities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 296 | 256 | 300 | 316
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | (3) | 0 | (5) | 3
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | (1) | (1) | 0 | 5
Purchases and issuances | 0 | 8 | 0 | 8
Sales and settlements | (8) | (8) | (24) | (23)
Transfer into Level 3 | 10 | 20 | 67 | 58
Transfer out of Level 3 | 0 | (12) | (44) | (104)
Financial assets, Ending Balance | 294 | 263 | 294 | 263
Commercial Mortgage Backed Securities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 48 | 28 | 44 | 28
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | 0 | (1) | 0 | (1)
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | (1) | 0 | (1) | 0
Purchases and issuances | 0 | 0 | 0 | 0
Sales and settlements | (1) | 0 | (1) | 0
Transfer into Level 3 | 0 | 0 | 4 | 0
Transfer out of Level 3 | (1) | 0 | (1) | 0
Financial assets, Ending Balance | 45 | 27 | 45 | 27
Asset-backed Securities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 332 | 204 | 226 | 75
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | 0 | 0 | 1 | 3
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | 0 | (3) | 0 | (2)
Purchases and issuances | 110 | 8 | 230 | 68
Sales and settlements | (3) | (7) | (51) | (23)
Transfer into Level 3 | 20 | 0 | 53 | 81
Transfer out of Level 3 | (10) | (23) | (10) | (23)
Financial assets, Ending Balance | 449 | 179 | 449 | 179
All other corporate [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 597 | 313 | 546 | 335
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | 0 | (1) | (3) | 4
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | 7 | 1 | (4) | 4
Purchases and issuances | 24 | 51 | 103 | 72
Sales and settlements | (13) | (13) | (37) | (59)
Transfer into Level 3 | 31 | 91 | 41 | 91
Transfer out of Level 3 | 0 | 0 | 0 | (5)
Financial assets, Ending Balance | 646 | 442 | 646 | 442
Equity securities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 118 | 81 | 93 | 31
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | 0 | 0 | (4) | 1
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | (2) | (2) | (1) | 2
Purchases and issuances | 7 | 2 | 52 | 48
Sales and settlements | 0 | 0 | 0 | (9)
Transfer into Level 3 | 0 | 0 | 0 | 22
Transfer out of Level 3 | 0 | 0 | (17) | (14)
Financial assets, Ending Balance | 123 | 81 | 123 | 81
Assets of Managed Investment Entities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 29 | 27 | 31 | 30
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | (3) | 0 | (9) | (2)
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | 0 | 0 | 0 | 0
Purchases and issuances | 0 | 3 | 4 | 3
Sales and settlements | 0 | (1) | 0 | (2)
Transfer into Level 3 | 0 | 0 | 0 | 0
Transfer out of Level 3 | 0 | 0 | 0 | 0
Financial assets, Ending Balance | $ 26 | $ 29 | $ 26 | $ 29

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