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SUMMARY OF ACCOUNTING POLICIES - Intangible Assets (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 19, 2024 | Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Components of acquired intangible assets |  |  |  |
Intangible assets residual value |  | $ 0 |  |
Finite-lived intangible assets |  | 165 |  |
Gross carrying amount |  | 748 | $ 614 |
Accumulated Amortization |  | (405) | (369) |
Total amortization expense |  | 343 | 245 |
Intangible amortization |  | 70 | 70 | $ 81
Intangible assets fully amortized and removed |  | 31 |  |
Estimated future annual amortization expense for acquired intangible assets |  |  |  |
2026 |  | 67 |  |
2027 |  | 57 |  |
2028 |  | 43 |  |
2029 |  | 40 |  |
2030 |  | 35 |  |
Thereafter |  | 101 |  |
Total amortization expense |  | 343 | 245 |
Crown |  |  |  |
Components of acquired intangible assets |  |  |  |
Finite-lived intangible assets | $ 128 |  |  |
Customer-related intangibles |  |  |  |
Components of acquired intangible assets |  |  |  |
Finite-lived intangible assets |  | $ 100 |  |
Intangible assets, weighted average useful life |  | 8 years 3 months 18 days |  |
Gross carrying amount |  | $ 383 | 316 |
Accumulated Amortization |  | (186) | (186) |
Total amortization expense |  | 197 | 130 |
Estimated future annual amortization expense for acquired intangible assets |  |  |  |
Total amortization expense |  | $ 197 | 130 |
Customer-related intangibles | Maximum |  |  |  |
Components of acquired intangible assets |  |  |  |
Useful life |  | 10 years |  |
Licenses and other intangibles |  |  |  |
Components of acquired intangible assets |  |  |  |
Finite-lived intangible assets |  | $ 65 |  |
Intangible assets, weighted average useful life |  | 6 years 8 months 12 days |  |
Gross carrying amount |  | $ 365 | 298 |
Accumulated Amortization |  | (219) | (183) |
Total amortization expense |  | 146 | 115 |
Estimated future annual amortization expense for acquired intangible assets |  |  |  |
Total amortization expense |  | $ 146 | $ 115 |

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- Definition Amount of residual value of finite-lived asset acquired in business combination, asset acquisition, and from joint venture formation. Excludes financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482686/350-30-45-2 + Details
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