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Significant Accounting Policies - 3R Program Receivables (Payables) (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
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Accounting Policies [Abstract] |  |
Risk adjustment payable, Current Benefit Year | $ (522) |
Risk adjustment payable, Prior Benefit Years | 0 |
Risk adjustment payable, Total | (522) | $ (214)
Reinsurance receivable, Current Benefit Year | 51 |
Reinsurance receivable, Prior Benefit Years | 4 |
Reinsurance receivable, Total | 55 | 36
Risk corridor payable, Current Benefit Year | (1) |
Risk corridor payable, Prior Benefit Years | 0 |
Risk corridor payable, Total | (1) | (10)
Minimum MLR payable, Current Benefit Year | (1) |
Minimum MLR payable, Prior Benefit Years | 0 |
Minimum MLR payable, Total | $ (1) | $ (3)

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- Definition Affordable Care Act, Premium Stabilization Program, Minimum Medical Loss Ratio, Receivable (Payable) + References No definition available. + Details
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- Definition Affordable Care Act, Premium Stabilization Program, Minimum Medical Loss Ratio, Receivable (Payable), Current Year + References No definition available. + Details
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- Definition Affordable Care Act, Premium Stabilization Program, Minimum Medical Loss Ratio, Receivable (Payable), Prior Years + References No definition available. + Details
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