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Debt and Financing Activities - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2024	Mar. 31, 2024	Jun. 15, 2023
Debt Instrument [Line Items]
Total debt	$ 5,635	$ 5,629
Less: Current portion	51	50
Total long-term debt	$ 5,584	5,579
Loans payable | 0.90% Notes due December 3, 2025
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	0.90%
Total debt	$ 500	500
Loans payable | 5.25% Notes due February 15, 2026
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	1.30%
Total debt	$ 499	499
Loans payable | 1.30% Notes due August 15, 2026
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	5.25%
Total debt	$ 499	499
Loans payable | 7.65% Debentures due March 1, 2027
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	7.65%
Total debt	$ 150	150
Loans payable | 3.95% Notes due February 16, 2028
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	3.95%
Total debt	$ 343	343
Loans payable | 4.90% Notes due July 15, 2028
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	4.90%		4.90%
Total debt	$ 399	399
Loans payable | 4.75% Notes due May 30, 2029
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	4.75%
Total debt	$ 196	196
Loans payable | 5.10% Notes due July 15, 2033
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	5.10%		5.10%
Total debt	$ 597	596
Loans payable | 6.00% Notes due March 1, 2041
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	6.00%
Total debt	$ 218	218
Loans payable | 4.88% Notes due March 15, 2044
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	4.88%
Total debt	$ 255	255
Loans payable | 1.50% Euro Notes due November 17, 2025
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	1.50%
Total debt	$ 642	646
Loans payable | 1.63% Euro Notes due October 30, 2026
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	1.63%
Total debt	$ 536	540
Loans payable | 3.13% Sterling Notes due February 17, 2029
Debt Instrument [Line Items]
Interest rate on debt instrument (percent)	3.13%
Total debt	$ 569	568
Lease and other obligations
Debt Instrument [Line Items]
Total debt	$ 232	$ 220

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