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Interest on Borrowings (Table Text Block)
12 Months Ended
Mar. 31, 2023
Interest Expense, Borrowings [Abstract]  
Components of interest expense     Years Ended March 31,     2023   2022   2021     (In thousands) Interest expense $ 229,559 $ 167,618 $ 165,484 Capitalized interest   (11,814)   (9,700)   (11,573) Amortization of transaction costs   6,987   5,556   5,949 Interest expense resulting from cash flow hedges   (774)   3,950   3,642 Total interest expense  223,958   167,424   163,502
Interest rates and company borrowings     Revolving Credit Activity       Years Ended March 31,       2023   2022   2021       (In thousands, except interest rates)   Weighted average interest rate during the year   3.93 % 1.40 % 1.40 % Interest rate at year end   5.89 % 1.49 % 1.40 % Maximum amount outstanding during the year $ 1,105,000 $ 1,105,000 $ 1,175,000   Average amount outstanding during the year $ 824,211 $ 1,085,074 $ 1,088,293   Facility fees$ 733 $ 253 $ 261