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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |
Income tax expense related to continuing operations | $ 122 | $ 200 | $ 217 | $ 439
Net discrete tax expense (benefit) | 1 | (22) | 4 | (57)
Tax benefit recognized related to excess tax benefits arising from adoption of ASU 2016-09 |  | 9 |  | 46
Goodwill impairment charge | $ 350 | $ 290 | $ 350 | $ 290
Income tax rate (as a percent) | 68.50% | 38.10% | 34.10% | 30.50%
Unrecognized tax benefits | $ 564 |  | $ 564 |
Unrecognized tax benefits that would reduce income tax expense and the effective tax rate | 419 |  | 419 |
Decrease in unrecognized tax benefits that could result from audit resolutions | $ 70 |  | 70 |
Technology Solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill impairment charge |  |  | $ 0 |
Enterprise Information Solutions | Technology Solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill impairment charge |  | $ 290 |  |
Nondeductible goodwill impairment |  | $ 269 |  |

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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 + Details
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