Debt and Financing Activities (Tables)

6 Months Ended

Sep. 30, 2025

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

Long-term debt consisted of the following:

(In millions)	September 30, 2025		March 31, 2025
U.S. Dollar notes (1) (2)
0.90% Notes due December 3, 2025	$	500	$	500
1.30% Notes due August 15, 2026	500		499
7.65% Debentures due March 1, 2027	150		150
3.95% Notes due February 16, 2028	343		343
4.90% Notes due July 15, 2028	400		399
4.75% Notes due May 30, 2029	196		196
4.25% Notes due September 15, 2029	500		500
4.65% Notes due May 30, 2030	650		—
4.95% Notes due May 30, 2032	650		—
5.10% Notes due July 15, 2033	597		597
5.25% Notes due May 30, 2035	698		—
6.00% Notes due March 1, 2041	217		217
4.88% Notes due March 15, 2044	255		255
Foreign currency notes (1) (3)
1.50% Euro Notes due November 17, 2025	704		649
1.63% Euro Notes due October 30, 2026	587		541
3.13% Sterling Notes due February 17, 2029	605		581
Lease and other obligations	206		227
Total debt	7,758		5,654
Less: Current portion	1,747		1,191
Total long-term debt	$	6,011	$	4,463

(1)These notes are unsecured and unsubordinated obligations of the Company.

(2)Interest on these U.S. dollar notes is payable semi-annually.

(3)Interest on these foreign currency notes is payable annually.