Business Segments - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2022 Location Facility Terminal Plant Sector Segment
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	29
Gypsum wallboard plants	5
Readymix concrete batch plants	26
Aggregates processing plants	3
Proportionate consolidation of share of joint venture revenues and operating earnings	50.00%