Segment Information - Additional Information (Detail)	6 Months Ended
	Sep. 30, 2022 Plant Location Terminal Facility Segment Sector
Segment Reporting [Abstract]
Number of sectors | Sector	2
Number of reportable business segments | Segment	4
Cement plant locations | Location	8
Slag grinding facility | Facility	1
Cement distribution terminals | Terminal	30
Readymix concrete batch plants	30
Aggregates processing plants	5
Gypsum wallboard plants	5
Proportionate consolidation of share of joint venture revenues and operating earnings	50.00%