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Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Mar. 31, 2024
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Operating Lease, Supplemental Balance Sheet Information [Abstract] |  |
Operating right-of-use assets, net | $ 635 | $ 731
Current operating lease liabilities | 227 | 282
Non-current operating lease liabilities | 444 | 497
Total operating lease liabilities | $ 671 | $ 779
Finance Lease, Supplemental Balance Sheet Information [Abstract] |  |
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Property and equipment, net of accumulated depreciation of $3,409 and $3,515 | Property and equipment, net of accumulated depreciation of $3,409 and $3,515
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Short-term debt and current maturities of long-term debt | Short-term debt and current maturities of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Long-term debt excluding finance lease liabilities | Long-term debt excluding finance lease liabilities
ROU finance lease assets | $ 145 | $ 264
Finance lease, liability, current | 123 | 178
Finance lease, liability, noncurrent | 155 | 242
Total finance lease liabilities | $ 278 | $ 420

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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