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Fair Value Measurements (Details 2) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 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 | 61 | 61 | 100 | 61
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) | (2) | 0 | (2) | 0
Purchases and issuances | 25 | 0 | 25 | 0
Sales and settlements | 0 | 0 | 0 | 0
Transfer into Level 3 | 0 | 0 | 0 | 0
Transfer out of Level 3 | 0 | 0 | (39) | 0
Financial assets, Ending Balance | 84 | 61 | 84 | 61
Residential Mortgage Backed Securities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 306 | 272 | 300 | 316
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | (1) | 2 | (2) | 3
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | (2) | 2 | 1 | 6
Purchases and issuances | 0 | 0 | 0 | 0
Sales and settlements | (9) | (7) | (16) | (15)
Transfer into Level 3 | 16 | 6 | 57 | 38
Transfer out of Level 3 | (14) | (19) | (44) | (92)
Financial assets, Ending Balance | 296 | 256 | 296 | 256
Commercial Mortgage Backed Securities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 44 | 28 | 44 | 28
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 | 4 | 0 | 4 | 0
Transfer out of Level 3 | 0 | 0 | 0 | 0
Financial assets, Ending Balance | 48 | 28 | 48 | 28
Asset-backed Securities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 211 | 206 | 226 | 75
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | 1 | 3 | 1 | 3
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | 0 | 0 | 0 | 1
Purchases and issuances | 115 | 10 | 120 | 60
Sales and settlements | (7) | (15) | (48) | (16)
Transfer into Level 3 | 12 | 0 | 33 | 81
Transfer out of Level 3 | 0 | 0 | 0 | 0
Financial assets, Ending Balance | 332 | 204 | 332 | 204
All other corporate [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 583 | 322 | 546 | 335
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | (3) | 4 | (3) | 5
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | (17) | 0 | (11) | 3
Purchases and issuances | 35 | 20 | 79 | 21
Sales and settlements | (11) | (30) | (24) | (46)
Transfer into Level 3 | 10 | 0 | 10 | 0
Transfer out of Level 3 | 0 | (3) | 0 | (5)
Financial assets, Ending Balance | 597 | 313 | 597 | 313
Equity securities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 84 | 41 | 93 | 31
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | (4) | 0 | (4) | 1
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | 3 | 2 | 1 | 4
Purchases and issuances | 35 | 16 | 45 | 46
Sales and settlements | 0 | 0 | 0 | (9)
Transfer into Level 3 | 0 | 22 | 0 | 22
Transfer out of Level 3 | 0 | 0 | (17) | (14)
Financial assets, Ending Balance | 118 | 81 | 118 | 81
Assets of Managed Investment Entities [Member] |  |  |  |
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Financial assets, Beginning Balance | 29 | 29 | 31 | 30
Impact of accounting change |  |  | 0 |
Total realized/unrealized gains (losses) included in Net income | (4) | (1) | (6) | (2)
Total realized/unrealized gains (losses) included in other comprehensive income (loss) | 0 | 0 | 0 | 0
Purchases and issuances | 4 | 0 | 4 | 0
Sales and settlements | 0 | (1) | 0 | (1)
Transfer into Level 3 | 0 | 0 | 0 | 0
Transfer out of Level 3 | 0 | 0 | 0 | 0
Financial assets, Ending Balance | $ 29 | $ 27 | $ 29 | $ 27

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