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Goodwill and Intangible Assets, Net - Schedule of Changes in the Carrying Amount of Goodwill and Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Dec. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2016
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  |  | $ 9,786 |  |
Goodwill acquired |  |  |  | 2,832 |  |
Impairment | $ 0 |  | $ 0 | (290) | $ 0 |
Amount reclassified to assets held for sale |  |  |  | (1,160) |  |
Goodwill allocated to disposed businesses |  |  |  | (35) |  |
Acquisition accounting, transfers and other adjustments |  |  |  | (100) |  |
Foreign currency translation adjustments, net |  |  |  | (421) |  |
Ending balance | 10,612 |  |  | 10,612 |  |
Accumulated goodwill impairment losses | 290 |  |  | 290 |  | $ 36
Distribution Solutions |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  |  | 7,987 |  |
Goodwill acquired |  |  |  | 2,810 |  |
Impairment |  |  |  | 0 |  |
Amount reclassified to assets held for sale |  |  |  | (89) |  |
Goodwill allocated to disposed businesses |  |  |  | (35) |  |
Acquisition accounting, transfers and other adjustments |  |  |  | (100) |  |
Foreign currency translation adjustments, net |  |  |  | (415) |  |
Ending balance | 10,158 |  |  | 10,158 |  |
Technology Solutions |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  |  | 1,799 |  |
Goodwill acquired |  |  |  | 22 |  |
Impairment |  | $ (290) |  | (290) |  |
Amount reclassified to assets held for sale |  |  |  | (1,071) |  |
Goodwill allocated to disposed businesses |  |  |  | 0 |  |
Acquisition accounting, transfers and other adjustments |  |  |  | 0 |  |
Foreign currency translation adjustments, net |  |  |  | (6) |  |
Ending balance | $ 454 |  |  | $ 454 |  |

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