Debt and Lines of Credit - Long-term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2022	Nov. 10, 2020
Unsecured Term Loan \| 2.150% Senior Unsecured Notes Due December 2030 \| Acuity Brands Lighting, Inc.
Debt Instrument [Line Items]
Aggregate principal amount		$ 500.0
Interest rate (as percent)		2.15%
Debt issuance price as a percentage of face value (as percent)		99.737%
Term of instrument (in years)		$ 4.8
Term of instrument (in years)		10 years
Lines of Credit \| Credit Facility \| Revolving credit facility borrowings
Debt Instrument [Line Items]
Term of instrument (in years)	5 years

Debt, Issuance Price, Percentage of Face Value

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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