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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Income Tax Contingency [Line Items] |  |  |  |
Tax contingency, interest expense, amount | $ 12 |  |  |
Tax expense (benefit), intra-entity transfers of assets other than inventory, amount |  |  | $ (147) |
Effective income tax rate reconciliations, tax credit, amount |  | $ 16 |  |
Tax expense (benefit), share-based payment arrangement |  |  |  | $ (53)
Unrecognized tax benefits | 1,400 |  | 1,400 |
Unrecognized tax benefits that would impact effective tax rate | 1,300 |  | 1,300 |
Minimum |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax liability increase due to proposed adjustment to taxable income | 600 |  | 600 |
Maximum |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax liability increase due to proposed adjustment to taxable income | $ 700 |  | $ 700 |

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- Definition Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 35 -Paragraph 2 -SubTopic 740 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480887/718-740-35-2 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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