Profit Or Loss [Abstract]

Morgan Sindall Group PLC - Filing #1588159

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Profit or loss [abstract]
Profit (loss) [abstract]
Revenue	—	—	—	3,212,800,000 GBP	—	—	—	3,034,000,000 GBP	—	—
Cost of sales	—	—	—	2,830,000,000 GBP	—	—	—	2,718,200,000 GBP	—	—
Gross profit	—	—	—	382,800,000 GBP	—	—	—	315,800,000 GBP	—	—
Administrative expenses	—	—	—	258,300,000 GBP	—	—	—	252,300,000 GBP	—	—
Profit (loss) from operating activities	—	—	—	129,800,000 GBP	—	—	—	65,400,000 GBP	—	—
Finance income	—	—	—	600,000 GBP	—	—	—	900,000 GBP	—	—
Finance costs	—	—	—	4,200,000 GBP	—	—	—	5,500,000 GBP	—	—
Share of profit (loss) of associates and joint ventures accounted for using equity method	—	—	—	5,400,000 GBP	—	—	—	2,300,000 GBP	—	—
Profit (loss) before tax	—	—	—	126,200,000 GBP	—	—	—	60,800,000 GBP	—	—
Tax expense (income)	—	—	—	28,300,000 GBP	—	—	—	15,400,000 GBP	—	—
Profit (loss)	– GBP	– GBP	– GBP	97,900,000 GBP	97,900,000 GBP	45,400,000 GBP	– GBP	45,400,000 GBP	– GBP	– GBP
Profit (loss), attributable to [abstract]
Profit (loss), attributable to owners of parent	—	—	—	97,900,000 GBP	—	—	—	45,400,000 GBP	—	—
Earnings per share [text block]	—	—	—	—	—	—	—	—	—	—
Earnings per share [abstract]
Earnings per share [line items]
Basic earnings per share [abstract]
Basic earnings (loss) per share	—	—	—	2	—	—	—	1	—	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share	—	—	—	2	—	—	—	1	—	—