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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Income Tax Contingency [Line Items] |  |
Net discrete tax expense (benefit) | $ 124 | $ 94
Effective income tax rate reconciliation, net discrete tax expense (benefit) | (125) |
Effective income tax rate reconciliation, foreign income tax rate differential, expense (benefit) | (58) |
Tax expense (benefit), share-based payment arrangement | (37) |
Unrecognized tax benefits, increase (decrease) | (36) |
Tax expense (benefit), intra-entity transfers of assets other than inventory, amount |  | $ 147
Unrecognized tax benefits | 1,400 |
Unrecognized tax benefits that would impact effective tax rate | $ 1,300 |

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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 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 Reference 2: 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 3: 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/1943274/2147479176/718-740-35-2 + Details
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