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Proposed Healthcare Technology Net Asset Exchange (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2017
Joint Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Legal and other consulting fees | $ 4 |
Joint Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Debt financing commitments received | $ 6,100 |
Expected | Joint Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Expected ownership interest in the joint venture (percent) |  | 70.00%
Expected | Change Healthcare | Joint Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Expected ownership interest in the joint venture (percent) |  | 30.00%

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