Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	May 15, 2025	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Subsequent Event [Line Items]
Common stock, dividends, per share, declared (in dollars per share)		$ 0.64	$ 0.56	$ 0.48
Share repurchases (in shares)		400,000	1,800,000
Stock Repurchased During Period, Value		$ 68,172	$ 210,715	$ 576,314
Subsequent Event
Subsequent Event [Line Items]
Common stock, dividends, per share, declared (in dollars per share)	$ 0.18

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

ADVANCED DRAINAGE SYSTEMS, INC. 10-K