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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Mar. 31, 2019 | Apr. 01, 2017
Income Tax Contingency [Line Items] |  |  |  |
Effective income tax rate | 15.60% | 33.50% |  |
Foreign earnings not indefinitely reinvested | $ 467 |  |  |
Potential federal and state cost from tax examinations | 462 |  |  |
Decrease in liability for uncertain tax positions |  | $ 44 |  |
Reasonably possible reduction in liability for uncertain tax positions | $ 5 |  |  |
HPES |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax indemnification receivable, uncertain tax positions |  |  |  | $ 27
Tax indemnification receivable, tax indemnification payable |  |  |  | 68
Tax indemnification payable |  |  |  | $ 112
Perspecta |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax indemnification receivable |  |  | $ 59 |
Tax indemnification payable |  |  | $ 15 |

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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