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Fair Value Measurements (Tables)
6 Months Ended
Sep. 30, 2023
Fair Value Disclosures [Abstract]  
Fair Value Measurements
The Company’s long-term debt is recorded at amortized cost. The carrying value and fair value of the Company’s long-term debt was as follows:
September 30, 2023March 31, 2023
(In millions)Carrying ValueFair ValueCarrying ValueFair Value
Long-term debt, including current maturities$5,584 $5,268 $5,594 $5,386