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Restricted Investments, Non-current (Tables) | 12 Months Ended
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Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract] |
Summary of restricted investments by health plan | The following table presents the balances of restricted investments:
| December 31,
| 2017 |  | 2016
| (In millions)
Florida | $ | 31 |  |  | $ | 22 |
New Mexico | 43 |  |  | 43 |
Ohio | 12 |  |  | 12 |
Puerto Rico | 10 |  |  | 10 |
Other | 23 |  |  | 23 |
Total Health Plans segment | $ | 119 |  |  | $ | 110 |
Contractual maturities of our held-to-maturity restricted investments | The contractual maturities of our held-to-maturity restricted investments, which are carried at amortized cost, which approximates fair value, as of December 31, 2017 are summarized below.
| Amortized Cost |  | Estimated Fair Value
| (In millions)
Due in one year or less | $ | 115 |  |  | $ | 115 |
Due after one year through five years | 4 |  |  | 4 |
| $ | 119 |  |  | $ | 119 |

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- Definition Investments classified by contractual maturities of our held-to-maturity restricted investments. + References No definition available. + Details
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- Definition Schedule of balances of restricted investments by health plan. + References No definition available. + Details
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