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Divestiture of Businesses (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Discontinued Operations Disclosures |  |  |  |  |
Gain from sale of business, pre-tax |  |  | $ 103 | $ 0 | $ 0
Distribution Solutions | ZEE Medical Business | Operating Segments |  |  |  |  |
Discontinued Operations Disclosures |  |  |  |  |
Proceeds from divestiture of businesses | $ 134 |  |  |  |
Gain from sale of business, pre-tax | 52 |  | 52 |  |
Gain from sale of business, after tax | $ 29 |  |  |  |
Technology Solutions | Nurse Triage | Operating Segments |  |  |  |  |
Discontinued Operations Disclosures |  |  |  |  |
Proceeds from divestiture of businesses |  | $ 84 |  |  |
Gain from sale of business, pre-tax |  | 51 | $ 51 |  |
Gain from sale of business, after tax |  | $ 38 |  |  |

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