Fair Value Measurements -- Assets at FV Recurring Basis (Details 2) - USD ($) | Mar. 31, 2016 | Dec. 31, 2015 |
Assets | | |
Available-for-sale securities | $ 1,742,000,000 | $ 1,729,000,000 |
Trading securities | 129,000,000 | 137,000,000 |
Preferred stock | 6,000,000 | 6,000,000 |
Total investment securities | 1,872,000,000 | 1,867,000,000 |
Other securities | 129,000,000 | 128,000,000 |
Transfer from Level 1 Assets to Level 2 | 0 | |
Transfer from Level 2 Assets to Level 1 | 0 | |
Transfer from Level 1 Liabilities to Level 2 | 0 | |
Transfers from Level 2 Liabilities to Level 1 | 0 | |
Bonds: | | |
Assets | | |
Available-for-sale securities | 1,703,000,000 | 1,691,000,000 |
Trading securities | 123,000,000 | 131,000,000 |
U.S. government and government sponsored entities | | |
Assets | | |
Available-for-sale securities | 106,000,000 | 111,000,000 |
Obligations of states, municipalities, and political subdivisions | | |
Assets | | |
Available-for-sale securities | 144,000,000 | 140,000,000 |
Corporate debt | | |
Assets | | |
Available-for-sale securities | 1,042,000,000 | 999,000,000 |
Trading securities | 116,000,000 | 124,000,000 |
Residential mortgage-backed securities (“RMBS”) | | |
Assets | | |
Available-for-sale securities | 118,000,000 | 128,000,000 |
Trading securities | 2,000,000 | 2,000,000 |
Commercial mortgage-backed securities (“CMBS”) | | |
Assets | | |
Available-for-sale securities | 116,000,000 | 116,000,000 |
Trading securities | 2,000,000 | 2,000,000 |
Collateralized debt obligations (“CDO”)/Asset-backed securities (“ABS”) | | |
Assets | | |
Available-for-sale securities | 55,000,000 | 71,000,000 |
Preferred stock | | |
Assets | | |
Available-for-sale securities | 13,000,000 | 13,000,000 |
Other Long-term Investments | | |
Assets | | |
Available-for-sale securities | 2,000,000 | 2,000,000 |
Common stocks | | |
Assets | | |
Available-for-sale securities | 24,000,000 | 23,000,000 |
Total Fair Value | | |
Assets | | |
Cash and cash equivalents | 716,000,000 | 939,000,000 |
Total investment securities | 1,872,000,000 | 1,867,000,000 |
Portion at Other than Fair Value Measurement | Common stocks | | |
Assets | | |
Available-for-sale securities | 1,000,000 | 1,000,000 |
Fair Value Measurements Using Level 1 | | |
Assets | | |
Cash and cash equivalents | 709,000,000 | 939,000,000 |
Total investment securities | 37,000,000 | 36,000,000 |
Fair Value Measurements Using Level 2 | | |
Assets | | |
Cash and cash equivalents | 7,000,000 | 0 |
Total investment securities | 1,832,000,000 | 1,829,000,000 |
Fair Value Measurements Using Level 3 | | |
Assets | | |
Total investment securities | 3,000,000 | 2,000,000 |
Fair Value, Measurements, Recurring | | |
Assets | | |
Other securities | | 128,000,000 |
Fair Value, Measurements, Recurring | Preferred stock | | |
Assets | | |
Preferred stock | 6,000,000 | 6,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | | |
Assets | | |
Cash equivalents in mutual funds | 164,000,000 | 240,000,000 |
Cash and cash equivalents | 7,000,000 | |
Available-for-sale securities | 1,742,000,000 | 1,729,000,000 |
Trading securities | 129,000,000 | 137,000,000 |
Total investment securities | 1,871,000,000 | 1,866,000,000 |
Restricted cash in mutual funds | 210,000,000 | 277,000,000 |
Total | 2,252,000,000 | 2,383,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Bonds: | | |
Assets | | |
Available-for-sale securities | 1,703,000,000 | 1,691,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | U.S. government and government sponsored entities | | |
Assets | | |
Available-for-sale securities | 106,000,000 | 111,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Obligations of states, municipalities, and political subdivisions | | |
Assets | | |
Available-for-sale securities | 144,000,000 | 140,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Non-US government and government sponsored entities [Member] | | |
Assets | | |
Available-for-sale securities | 122,000,000 | 126,000,000 |
Trading securities | 3,000,000 | |
Fair Value, Measurements, Recurring | Total Fair Value | Non-U.S. government and government sponsored entities | | |
Assets | | |
Trading securities | | 3,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Corporate debt | | |
Assets | | |
Available-for-sale securities | 1,042,000,000 | 999,000,000 |
Trading securities | 116,000,000 | 124,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Residential mortgage-backed securities (“RMBS”) | | |
Assets | | |
Available-for-sale securities | 118,000,000 | 128,000,000 |
Trading securities | 2,000,000 | 2,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Commercial mortgage-backed securities (“CMBS”) | | |
Assets | | |
Available-for-sale securities | 116,000,000 | 116,000,000 |
Trading securities | 2,000,000 | 2,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Collateralized debt obligations (“CDO”)/Asset-backed securities (“ABS”) | | |
Assets | | |
Available-for-sale securities | 55,000,000 | 71,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Preferred stock | | |
Assets | | |
Available-for-sale securities | 13,000,000 | 13,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Other Long-term Investments | | |
Assets | | |
Available-for-sale securities | 2,000,000 | 2,000,000 |
Fair Value, Measurements, Recurring | Total Fair Value | Common stocks | | |
Assets | | |
Available-for-sale securities | 24,000,000 | 23,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | | |
Assets | | |
Cash equivalents in mutual funds | 164,000,000 | 240,000,000 |
Available-for-sale securities | 30,000,000 | 29,000,000 |
Trading securities | 7,000,000 | 6,000,000 |
Total investment securities | 37,000,000 | 35,000,000 |
Restricted cash in mutual funds | 210,000,000 | 277,000,000 |
Total | 411,000,000 | 552,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Bonds: | | |
Assets | | |
Trading securities | 1,000,000 | 0 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Non-US government and government sponsored entities [Member] | | |
Assets | | |
Trading securities | 0 | |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Corporate debt | | |
Assets | | |
Trading securities | 1,000,000 | |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Residential mortgage-backed securities (“RMBS”) | | |
Assets | | |
Trading securities | 0 | |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Commercial mortgage-backed securities (“CMBS”) | | |
Assets | | |
Trading securities | 0 | |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Preferred stock | | |
Assets | | |
Available-for-sale securities | 6,000,000 | 6,000,000 |
Preferred stock | 6,000,000 | 6,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Common stocks | | |
Assets | | |
Available-for-sale securities | 24,000,000 | 23,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | | |
Assets | | |
Cash and cash equivalents | 7,000,000 | |
Available-for-sale securities | 1,710,000,000 | 1,698,000,000 |
Trading securities | 122,000,000 | 131,000,000 |
Total investment securities | 1,832,000,000 | 1,829,000,000 |
Total | 1,839,000,000 | 1,829,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Bonds: | | |
Assets | | |
Available-for-sale securities | 1,703,000,000 | 1,691,000,000 |
Trading securities | 122,000,000 | 131,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | U.S. government and government sponsored entities | | |
Assets | | |
Available-for-sale securities | 106,000,000 | 111,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Obligations of states, municipalities, and political subdivisions | | |
Assets | | |
Available-for-sale securities | 144,000,000 | 140,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Non-US government and government sponsored entities [Member] | | |
Assets | | |
Available-for-sale securities | 122,000,000 | 126,000,000 |
Trading securities | 3,000,000 | |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Non-U.S. government and government sponsored entities | | |
Assets | | |
Trading securities | | 3,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Corporate debt | | |
Assets | | |
Available-for-sale securities | 1,042,000,000 | 999,000,000 |
Trading securities | 115,000,000 | 124,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Residential mortgage-backed securities (“RMBS”) | | |
Assets | | |
Available-for-sale securities | 118,000,000 | 128,000,000 |
Trading securities | 2,000,000 | 2,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Commercial mortgage-backed securities (“CMBS”) | | |
Assets | | |
Available-for-sale securities | 116,000,000 | 116,000,000 |
Trading securities | 2,000,000 | 2,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Collateralized debt obligations (“CDO”)/Asset-backed securities (“ABS”) | | |
Assets | | |
Available-for-sale securities | 55,000,000 | 71,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Preferred stock | | |
Assets | | |
Available-for-sale securities | 7,000,000 | 7,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | | |
Assets | | |
Available-for-sale securities | 2,000,000 | 2,000,000 |
Trading securities | 0 | 0 |
Total investment securities | 2,000,000 | 2,000,000 |
Total | 2,000,000 | 2,000,000 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Bonds: | | |
Assets | | |
Available-for-sale securities | 0 | 0 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Corporate debt | | |
Assets | | |
Available-for-sale securities | 0 | 0 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Residential mortgage-backed securities (“RMBS”) | | |
Assets | | |
Available-for-sale securities | 0 | 0 |
Trading securities | 0 | |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Commercial mortgage-backed securities (“CMBS”) | | |
Assets | | |
Available-for-sale securities | 0 | 0 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Collateralized debt obligations (“CDO”)/Asset-backed securities (“ABS”) | | |
Assets | | |
Available-for-sale securities | | 0 |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Preferred stock | | |
Assets | | |
Available-for-sale securities | 0 | |
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Other Long-term Investments | | |
Assets | | |
Available-for-sale securities | $ 2,000,000 | $ 2,000,000 |