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Interest on Borrowings (Narratives) (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]      
Interest paid in cash including payments related to derivative contracts $ 225.8 $ 166.1 $ 166.4