Statement Of Changes In Equity [Abstract]

Smith (DS) PLC - Filing #1732029

Concept	As at 2022-04-30	As at 2022-04-30	As at 2022-04-30	As at 2022-04-30	As at 2022-04-30	As at 2022-04-30	2021-05-01 to 2022-04-30	2021-05-01 to 2022-04-30	2021-05-01 to 2022-04-30	As at 2022-04-30	2021-05-01 to 2022-04-30	2021-05-01 to 2022-04-30	2021-05-01 to 2022-04-30	2021-05-01 to 2022-04-30	2021-05-01 to 2022-04-30	2021-05-01 to 2022-04-30	2021-05-01 to 2022-04-30	2021-05-01 to 2022-04-30	As at 2022-04-30	As at 2022-04-30	2020-05-01 to 2021-04-30	As at 2021-04-30	As at 2021-04-30	2020-05-01 to 2021-04-30	2020-05-01 to 2021-04-30	2020-05-01 to 2021-04-30	2020-05-01 to 2021-04-30	2020-05-01 to 2021-04-30	2020-05-01 to 2021-04-30	As at 2021-04-30	As at 2021-04-30	As at 2021-04-30	As at 2021-04-30	As at 2021-04-30	As at 2021-04-30	As at 2021-04-30	2020-05-01 to 2021-04-30	2020-05-01 to 2021-04-30	2020-05-01 to 2021-04-30	2020-05-01 to 2021-04-30	As at 2020-04-30	As at 2020-04-30	As at 2020-04-30	As at 2020-04-30	As at 2020-04-30	As at 2020-04-30	As at 2020-04-30	As at 2020-04-30	As at 2020-04-30
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	1,352,000,000 GBP	105,000,000 GBP	2, 248 GBP	4,23 2 GBP	2,000,000 GBP	137,000,000 GBP	—	—	—	9,000,000 GBP	—	—	—	—	—	—	—	—	4,234,000,000 GBP	6 09 GBP	—	3,000,000 GBP	3,535,000,000 GBP	—	—	—	—	—	—	84,000,000 GBP	2,241,000,000 GBP	53,000,000 GBP	1,189,000,000 GBP	137,000,000 GBP	3,533,000,000 GBP	2,000,000 GBP	—	—	—	—	3,000,000 GBP	2,238,000,000 GBP	14,000,000 GBP	137,000,000 GBP	39,000,000 GBP	1,003,000,000 GBP	3,350,000,000 GBP	1,000,000 GBP	3,351,000,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	—	—	—	—	– GBP	35,000,000 GBP	315,000,000 GBP	—	280,000,000 GBP	280,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	280,000,000 GBP	—	—	– GBP	—	—	– GBP	– GBP	– GBP	28,000,000 GBP	222,000,000 GBP	194,000,000 GBP	—	—	—	—	—	—	—	194,000,000 GBP	– GBP	– GBP	194,000,000 GBP	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	589,000,000 GBP	—	—	—	—	—	—	—	—	—	—	19,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	—	—	—	—	—	– GBP	—	—	—	334,000,000 GBP	869,000,000 GBP	– GBP	– GBP	– GBP	14,000,000 GBP	549,000,000 GBP	869,000,000 GBP	—	—	– GBP	—	—	– GBP	9 8 GBP	92,000,000 GBP	—	—	175,000,000 GBP	—	—	—	—	—	—	—	181,000,000 GBP	– GBP	– GBP	17 5 GBP	—	—	—	—	—	—	—	—	—
Issue of equity	—	—	—	—	—	—	– GBP	—	—	—	– GBP	7,000,000 GBP	– GBP	– GBP	7,000,000 GBP	– GBP	– GBP	7,000,000 GBP	—	—	– GBP	—	—	– GBP	– GBP	– GBP	—	—	3,000,000 GBP	—	—	—	—	—	—	—	– GBP	– GBP	3,000,000 GBP	3,000,000 GBP	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	—	—	—	—	—	– GBP	—	—	—	166,000,000 GBP	166,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	166,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through other changes, equity	—	—	—	—	—	—	6,000,000 GBP	—	—	—	1 71 GBP	17 0 GBP	– GBP	– GBP	7,000,000 GBP	7,000,000 GBP	7,000,000 GBP	1 70 GBP	—	—	– GBP	—	—	– GBP	– GBP	– GBP	—	—	9,000,000 GBP	—	—	—	—	—	—	—	5,000,000 GBP	1,000,000 GBP	3,000,000 GBP	8,000,000 GBP	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	—	—	—	—	—	– GBP	—	—	—	10,000,000 GBP	10,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	1 0 GBP	—	—	– GBP	—	—	– GBP	– GBP	– GBP	—	—	10,000,000 GBP	—	—	—	—	—	—	—	10,000,000 GBP	– GBP	– GBP	10,000,000 GBP	—	—	—	—	—	—	—	—	—