$AYI
ACUITY BRANDS INC Stock $ayi

$ayi Overview Financials Valuation SEC Filings Company Website

2021 Q3 Form 10-K Financial Statement

#000114421521000097 Filed on October 27, 2021

Income Statement

Concept	2021 Q3	2021	2020 Q3
Revenue	$992.7M	$3.461B	$891.2M
YoY Change	11.39%	4.05%	-5.0%
Cost Of Revenue	$573.4M	$1.986B	$516.1M
YoY Change	11.1%	3.23%	-5.02%
Gross Profit	$419.3M	$1.475B	$375.1M
YoY Change	11.78%	5.18%	-4.97%
Gross Profit Margin	42.24%	42.62%	42.09%
Selling, General & Admin	$284.7M	$1.044B	$250.1M
YoY Change	13.83%	1.52%	-1.88%
% of Gross Profit	67.9%	70.79%	66.68%
Research & Development		$88.30M
YoY Change		7.68%
% of Gross Profit		5.99%
Depreciation & Amortization	$25.10M	$100.1M	$25.80M
YoY Change	-2.71%	-0.99%	14.16%
% of Gross Profit	5.99%	6.79%	6.88%
Operating Expenses	$284.7M	$1.132B	$261.0M
YoY Change	9.08%	1.97%	-0.61%
Operating Profit	$134.6M	$427.6M	$114.1M
YoY Change	17.97%	20.83%	-13.63%
Interest Expense	-$5.500M	$24.20M	-$3.900M
YoY Change	41.03%	-8.33%	-49.35%
% of Operating Profit	-4.09%	5.66%	-3.42%
Other Income/Expense, Net	-$1.700M	-$8.200M	-$4.400M
YoY Change	-61.36%	38.98%	109.52%
Pretax Income	$125.6M	$396.2M	$97.60M
YoY Change	28.69%	22.02%	-19.0%
Income Tax	$27.50M	$89.90M	$23.90M
% Of Pretax Income	21.89%	22.69%	24.49%
Net Earnings	$98.10M	$306.3M	$73.70M
YoY Change	33.11%	23.36%	-23.31%
Net Earnings / Revenue	9.88%	8.85%	8.27%
Basic Earnings Per Share		$8.44	$1.88
Diluted Earnings Per Share	$2.725M	$8.38	$1.87
COMMON SHARES
Basic Shares Outstanding		36.30M shares
Diluted Shares Outstanding		36.60M shares

Balance Sheet

Concept	2021 Q3	2021	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$491.3M	$491.3M	$560.7M
YoY Change	-12.38%	-12.38%	21.63%
Cash & Equivalents	$491.3M	$491.3M	$560.7M
Short-Term Investments
Other Short-Term Assets	$82.50M	$82.50M	$58.60M
YoY Change	40.78%	40.78%	-25.82%
Inventory	$398.7M	$398.7M	$320.1M
Prepaid Expenses
Receivables	$571.8M	$571.8M	$500.3M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.544B	$1.544B	$1.440B
YoY Change	7.27%	7.27%	-0.15%
LONG-TERM ASSETS
Property, Plant & Equipment	$269.1M	$327.1M	$270.5M
YoY Change	-0.52%	-2.04%	-2.45%
Goodwill	$1.095B		$1.080B
YoY Change	1.36%		11.65%
Intangibles	$573.2M		$605.9M
YoY Change	-5.4%		30.02%
Long-Term Investments		$5.300M
YoY Change		-11.67%
Other Assets	$33.90M	$30.50M	$29.50M
YoY Change	14.92%	16.41%	66.67%
Total Long-Term Assets	$2.031B	$2.031B	$2.052B
YoY Change	-1.03%	-1.03%	18.57%
TOTAL ASSETS
Total Short-Term Assets	$1.544B	$1.544B	$1.440B
Total Long-Term Assets	$2.031B	$2.031B	$2.052B
Total Assets	$3.575B	$3.575B	$3.492B
YoY Change	2.39%	2.39%	10.06%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$391.5M	$391.5M	$326.5M
YoY Change	19.91%	19.91%	-3.63%
Accrued Expenses	$300.7M	$300.7M	$266.8M
YoY Change	12.71%	12.71%	7.49%
Deferred Revenue	$7.700M		$5.400M
YoY Change	42.59%		14.89%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$0.00	$24.30M
YoY Change	-100.0%	-100.0%	167.03%
Total Short-Term Liabilities	$692.2M	$692.2M	$617.6M
YoY Change	12.08%	12.08%	3.61%
LONG-TERM LIABILITIES
Long-Term Debt	$494.3M	$494.3M	$376.8M
YoY Change	31.18%	31.18%	8.43%
Other Long-Term Liabilities	$136.2M	$243.1M	$2.500M
YoY Change	5348.0%	-11.57%	-51.92%
Total Long-Term Liabilities	$630.5M	$737.4M	$379.3M
YoY Change	66.23%	13.15%	7.54%
TOTAL LIABILITIES
Total Short-Term Liabilities	$692.2M	$692.2M	$617.6M
Total Long-Term Liabilities	$630.5M	$737.4M	$379.3M
Total Liabilities	$1.531B	$1.531B	$1.364B
YoY Change	12.2%	12.2%	8.83%
SHAREHOLDERS EQUITY
Retained Earnings	$2.810B		$2.523B
YoY Change	11.37%		9.91%
Common Stock	$996.1M		$964.1M
YoY Change	3.32%		3.61%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.664B		$1.230B
YoY Change	35.26%		6.03%
Treasury Stock Shares	18.83M shares		15.00M shares
Shareholders Equity	$2.045B	$2.045B	$2.128B
YoY Change
Total Liabilities & Shareholders Equity	$3.575B	$3.575B	$3.492B
YoY Change	2.39%	2.39%	10.06%

Cashflow Statement

Concept	2021 Q3	2021	2020 Q3
OPERATING ACTIVITIES
Net Income	$98.10M	$306.3M	$73.70M
YoY Change	33.11%	23.36%	-23.31%
Depreciation, Depletion And Amortization	$25.10M	$100.1M	$25.80M
YoY Change	-2.71%	-0.99%	14.16%
Cash From Operating Activities	$92.50M	$408.7M	$126.5M
YoY Change	-26.88%	-19.04%	-30.76%
INVESTING ACTIVITIES
Capital Expenditures	-$13.20M	$43.80M	-$16.60M
YoY Change	-20.48%	-20.22%	25.76%
Acquisitions		$75.30M
YoY Change		-75.15%
Other Investing Activities	-$73.30M	$3.500M	-$200.0K
YoY Change	36550.0%	66.67%	-93.1%
Cash From Investing Activities	-$86.50M	-$117.9M	-$16.80M
YoY Change	414.88%	-67.23%	4.35%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$434.9M
YoY Change		527.56%
Debt Paid & Issued, Net		$401.1M
YoY Change		12.76%
Cash From Financing Activities	-102.3M	-$362.6M	-77.10M
YoY Change	32.68%	620.87%	96.68%
NET CHANGE
Cash From Operating Activities	92.50M	$408.7M	126.5M
Cash From Investing Activities	-86.50M	-$117.9M	-16.80M
Cash From Financing Activities	-102.3M	-$362.6M	-77.10M
Net Change In Cash	-96.30M	-$69.40M	32.60M
YoY Change	-395.4%	-169.61%	-74.41%
FREE CASH FLOW
Cash From Operating Activities	$92.50M	$408.7M	$126.5M
Capital Expenditures	-$13.20M	$43.80M	-$16.60M
Free Cash Flow	$105.7M	$364.9M	$143.1M
YoY Change	-26.14%	-18.89%	-26.95%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001144215
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201409Member
CY2020	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201613Member
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-08-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--08-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity Registrant Name EntityRegistrantName	ACUITY BRANDS, INC
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity File Number EntityFileNumber	001-16583
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	58-2632672
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q1	dei	Entity Public Float EntityPublicFloat	4370000000	USD
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	1170 Peachtree Street, N.E.
CY2021	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 2300
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Atlanta
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	GA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	30309
CY2021	dei	City Area Code CityAreaCode	404
CY2021	dei	Local Phone Number LocalPhoneNumber	853-1400
CY2021	dei	Security12b Title Security12bTitle	Common stock, $0.01 par value per share
CY2021	dei	Trading Symbol TradingSymbol	AYI
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	58000000.0	USD
CY2021Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	34924594	shares
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	491300000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	560700000	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1200000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2600000	USD
CY2021Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	571800000	USD
CY2020Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	500300000	USD
CY2021Q3	us-gaap	Inventory Net InventoryNet	398700000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	320100000	USD
CY2021Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	82500000	USD
CY2020Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	58600000	USD
CY2021Q3	us-gaap	Assets Current AssetsCurrent	1544300000	USD
CY2020Q3	us-gaap	Assets Current AssetsCurrent	1439700000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	269100000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	270500000	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	17200000	USD
CY2021Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	95300000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	63400000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	1094700000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	1080000000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	573200000	USD
CY2020Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	605900000	USD
CY2021Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	1900000	USD
CY2020Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	2700000	USD
CY2021Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	33900000	USD
CY2020Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	29500000	USD
CY2021Q3	us-gaap	Assets Assets	3575100000	USD
CY2020Q3	us-gaap	Assets Assets	3491700000	USD
CY2021Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	391500000	USD
CY2020Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	326500000	USD
CY2021Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2020Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	24300000	USD
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	15900000	USD
CY2020Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	89000000.0	USD
CY2021Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	189500000	USD
CY2020Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	160600000	USD
CY2021Q3	us-gaap	Liabilities Current LiabilitiesCurrent	692200000	USD
CY2020Q3	us-gaap	Liabilities Current LiabilitiesCurrent	617600000	USD
CY2021Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	494300000	USD
CY2020Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	376800000	USD
CY2021Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	46700000	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	56800000	USD
CY2021Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	60200000	USD
CY2020Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	91600000	USD
CY2021Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	101000000.0	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	94900000	USD
CY2021Q3	ayi	Other Long Term Liabilities OtherLongTermLiabilities	136200000	USD
CY2020Q3	ayi	Other Long Term Liabilities OtherLongTermLiabilities	126500000	USD
CY2021Q3	us-gaap	Liabilities Liabilities	1530600000	USD
CY2020Q3	us-gaap	Liabilities Liabilities	1364200000	USD
CY2021Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2021Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2021Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2020Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2021Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	54018978	shares
CY2020Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	53885165	shares
CY2021Q3	us-gaap	Common Stock Value CommonStockValue	500000	USD
CY2020Q3	us-gaap	Common Stock Value CommonStockValue	500000	USD
CY2021Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	995600000	USD
CY2020Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	963600000	USD
CY2021Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2810300000	USD
CY2020Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2523300000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-98200000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-132700000	USD
CY2021Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	18826611	shares
CY2020Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	15012449	shares
CY2021Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1663700000	USD
CY2020Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1227200000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	2044500000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	2127500000	USD
CY2021Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3575100000	USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3491700000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3461000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3326300000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3672700000	USD
CY2021	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1986000000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1923900000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2193000000	USD
CY2021	us-gaap	Gross Profit GrossProfit	1475000000	USD
CY2020	us-gaap	Gross Profit GrossProfit	1402400000	USD
CY2019	us-gaap	Gross Profit GrossProfit	1479700000	USD
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1044100000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1028500000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1015000000	USD
CY2021	us-gaap	Restructuring Charges RestructuringCharges	3300000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	20000000.0	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2019	us-gaap	Restructuring Charges RestructuringCharges	1800000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	427600000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	353900000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	462900000	USD
CY2021	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	-23200000	USD
CY2020	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	-23300000	USD
CY2019	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	-33300000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-8200000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5900000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-4700000	USD
CY2021	ayi	Other Nonoperating Expenses OtherNonoperatingExpenses	-31400000	USD
CY2020	ayi	Other Nonoperating Expenses OtherNonoperatingExpenses	-29200000	USD
CY2019	ayi	Other Nonoperating Expenses OtherNonoperatingExpenses	-38000000.0	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	396200000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	324700000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	424900000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	89900000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76400000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	94500000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	306300000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	248300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	330400000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.44
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.29
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.32
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36300000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39500000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39700000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.38
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.27
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.29
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36600000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39600000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39800000	shares
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.52
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.52
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.52
CY2021	us-gaap	Net Income Loss NetIncomeLoss	306300000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	248300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	330400000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	13300000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	11900000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-11500000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-21200000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6800000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	25100000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	34500000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18700000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-36600000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	340800000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	267000000.0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	293800000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	306300000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	248300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	330400000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	100100000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	101100000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	88300000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	32500000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	38200000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	29200000	USD
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	100000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-300000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-900000	USD
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	6000000.0	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	8800000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2021	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-2700000	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-6700000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	9300000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	68700000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-74500000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-97700000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	35500000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-38000000.0	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-70800000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	18200000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-12900000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	34000000.0	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	65500000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-19600000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-111500000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-23500000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-9000000.0	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-13600000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	408700000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	504800000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	494700000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	43800000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	54900000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	53000000.0	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	4700000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	200000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	75300000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	303000000.0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2900000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3500000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2100000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2900000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-117900000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-359800000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-53000000.0	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	493800000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	400000000.0	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	86500000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	401100000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	355700000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	86900000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	434900000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	69300000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	81600000	USD
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3200000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	92900000	USD
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	900000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	600000	USD
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4500000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5400000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6000000.0	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	19100000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	20800000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	20800000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-362600000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-50300000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-108200000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2400000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5000000.0	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1600000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-69400000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	99700000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	331900000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	560700000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	461000000.0	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	129100000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	491300000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	560700000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	461000000.0	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	86400000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	64600000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	22200000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	29800000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	35600000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	1716800000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	330400000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-36600000	USD
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	23100000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	600000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.52
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	20800000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	81600000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	1918900000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	248300000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18700000	USD
CY2020	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	32700000	USD
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	800000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.52
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	20800000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	100000	USD
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	71200000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	2127500000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	306300000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	34500000	USD
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	28800000	USD
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1000000.0	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.52
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	19100000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2200000	USD
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	436500000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	2044500000	USD
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	statement
CY2021	us-gaap	Use Of Estimates UseOfEstimates	The preparation of financial statements and related disclosures in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates.
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	Concentrations of credit risk with respect to receivables, which are typically unsecured, are generally limited due to the wide variety of customers and markets using our lighting, lighting controls, building management systems, and location-aware applications as well as their dispersion across many different geographic areas.
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	Certain prior-period amounts have been reclassified to conform to the current year presentation. No material reclassifications occurred during the current period.
CY2021Q3	us-gaap	Inventory Work In Process And Raw Materials InventoryWorkInProcessAndRawMaterials	209500000	USD
CY2020Q3	us-gaap	Inventory Work In Process And Raw Materials InventoryWorkInProcessAndRawMaterials	170300000	USD
CY2021Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	227200000	USD
CY2020Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	199100000	USD
CY2021Q3	us-gaap	Inventory Gross InventoryGross	436700000	USD
CY2020Q3	us-gaap	Inventory Gross InventoryGross	369400000	USD
CY2021Q3	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	38000000.0	USD
CY2020Q3	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	49300000	USD
CY2021Q3	us-gaap	Inventory Net InventoryNet	398700000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	320100000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	1080000000	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	10000000.0	USD
CY2019Q3	us-gaap	Goodwill Goodwill	967300000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	147800000	USD
CY2020	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-41500000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	6400000	USD
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	4700000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	1094700000	USD
CY2021	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P19Y
CY2021Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	682800000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	284400000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	674000000.0	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	242400000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	40700000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	41700000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	30800000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	41200000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	40500000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	40000000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	31900000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	29100000	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	ayi	Numberof Unimpaired Intangible Assets NumberofUnimpairedIntangibleAssets	12	intangible_asset
CY2021Q3	us-gaap	Deferred Costs DeferredCosts	12900000	USD
CY2020Q3	us-gaap	Deferred Costs DeferredCosts	12300000	USD
CY2021Q3	us-gaap	Investments Investments	5300000	USD
CY2020Q3	us-gaap	Investments Investments	6000000.0	USD
CY2021Q3	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	13000000.0	USD
CY2020Q3	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	0	USD
CY2021Q3	ayi	Researchand Development Tax Credit Receivable ResearchandDevelopmentTaxCreditReceivable	0	USD
CY2020Q3	ayi	Researchand Development Tax Credit Receivable ResearchandDevelopmentTaxCreditReceivable	8600000	USD
CY2021Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	2700000	USD
CY2020Q3	us-gaap	Taxes Payable Current TaxesPayableCurrent	12700000	USD
CY2021Q3	us-gaap	Interest Payable Current InterestPayableCurrent	2400000	USD
CY2020Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	2600000	USD
CY2021Q3	ayi	Other Long Term Assets OtherLongTermAssets	33900000	USD
CY2020Q3	ayi	Other Long Term Assets OtherLongTermAssets	29500000	USD
CY2021Q3	ayi	Life Insurance Numberof Currentand Former Employees Covered LifeInsuranceNumberofCurrentandFormerEmployeesCovered	62	employee
CY2021Q3	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	33900000	USD
CY2020Q3	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	27700000	USD
CY2021Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	7700000	USD
CY2020Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	5400000	USD
CY2021Q3	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	28900000	USD
CY2020Q3	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	26500000	USD
CY2021Q3	ayi	Freight Costs Current FreightCostsCurrent	17600000	USD
CY2020Q3	ayi	Freight Costs Current FreightCostsCurrent	11700000	USD
CY2021Q3	ayi	Warranty And Recall Costs Current WarrantyAndRecallCostsCurrent	16800000	USD
CY2020Q3	ayi	Warranty And Recall Costs Current WarrantyAndRecallCostsCurrent	13800000	USD
CY2021Q3	us-gaap	Taxes Payable Current TaxesPayableCurrent	11700000	USD
CY2020Q3	us-gaap	Interest Payable Current InterestPayableCurrent	1000000.0	USD
CY2021Q3	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	42400000	USD
CY2020Q3	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	30800000	USD
CY2021Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	189500000	USD
CY2020Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	160600000	USD
CY2021Q3	ayi	Deferred Compensation And Postretirement Defined Benefit Plans Liabilities Noncurrent DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	43100000	USD
CY2020Q3	ayi	Deferred Compensation And Postretirement Defined Benefit Plans Liabilities Noncurrent DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	42700000	USD
CY2021Q3	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	19700000	USD
CY2020Q3	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	18900000	USD
CY2021Q3	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	3900000	USD
CY2020Q3	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	6500000	USD
CY2021Q3	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	3500000	USD
CY2020Q3	us-gaap	Product Warranty Accrual Noncurrent ProductWarrantyAccrualNoncurrent	2300000	USD
CY2021Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	9300000	USD
CY2020Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2500000	USD
CY2021Q3	ayi	Other Long Term Liabilities OtherLongTermLiabilities	136200000	USD
CY2020Q3	ayi	Other Long Term Liabilities OtherLongTermLiabilities	126500000	USD
CY2021	ayi	Deferred Compensation Arrangement With Individual Automatic Contribution Rate DeferredCompensationArrangementWithIndividualAutomaticContributionRate	0.03
CY2021	ayi	Other Shipping And Handling Costs OtherShippingAndHandlingCosts	132000000	USD
CY2020	ayi	Other Shipping And Handling Costs OtherShippingAndHandlingCosts	121900000	USD
CY2019	ayi	Other Shipping And Handling Costs OtherShippingAndHandlingCosts	138400000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	32500000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	38200000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	29200000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6500000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6600000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6500000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	500000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	1400000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	1600000	USD
CY2021	us-gaap	Depreciation Depreciation	59400000	USD
CY2020	us-gaap	Depreciation Depreciation	59400000	USD
CY2019	us-gaap	Depreciation Depreciation	57500000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	845300000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	802800000	USD
CY2021Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	576200000	USD
CY2020Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	532300000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	269100000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	270500000	USD
CY2021	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	88300000	USD
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	82000000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	74700000	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	15900000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	15100000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	18500000	USD
CY2021	us-gaap	Interest Expense InterestExpense	24200000	USD
CY2020	us-gaap	Interest Expense InterestExpense	26400000	USD
CY2019	us-gaap	Interest Expense InterestExpense	36400000	USD
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	1000000.0	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	3100000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	3100000	USD
CY2021	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	-23200000	USD
CY2020	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	-23300000	USD
CY2019	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	-33300000	USD
CY2020	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	11300000	USD
CY2020	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-7400000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18700000	USD
CY2021	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	27200000	USD
CY2021	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-7300000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	34500000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	43100000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	8600000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	34500000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	20800000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	2100000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18700000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-44300000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-7700000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-36600000	USD
CY2021Q3	ayi	Debt Securities Number Of Investments DebtSecuritiesNumberOfInvestments	1	investment
CY2021Q3	us-gaap	Debt Securities DebtSecurities	4000000	USD
CY2020Q4	us-gaap	Asset Impairment Charges AssetImpairmentCharges	4000000	USD
CY2021Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2000000	USD
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.02
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.02
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	16800000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	14300000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	11100000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	9400000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	5500000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	8100000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	65200000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2600000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	62600000	USD
CY2021Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	18300000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	18100000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	2000000.0	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	2300000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2200000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2800000	USD
CY2021	us-gaap	Lease Cost LeaseCost	22500000	USD
CY2020	us-gaap	Lease Cost LeaseCost	23200000	USD
CY2019	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	22600000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	26200000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	18700000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	12900000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	27200000	USD
CY2021Q3	us-gaap	Long Term Debt LongTermDebt	494300000	USD
CY2020Q3	us-gaap	Long Term Debt LongTermDebt	401100000	USD
CY2021	ayi	Standard Product Warranty Period StandardProductWarrantyPeriod	P5Y
CY2020Q3	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	16100000	USD
CY2019Q3	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	11500000	USD
CY2018Q3	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	27300000	USD
CY2021	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	32300000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	32000000.0	USD
CY2019	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	18700000	USD
CY2021	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	28400000	USD
CY2020	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	27500000	USD
CY2019	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	19700000	USD
CY2021	us-gaap	Product Warranty Accrual Additions From Business Acquisition ProductWarrantyAccrualAdditionsFromBusinessAcquisition	300000	USD
CY2020	us-gaap	Product Warranty Accrual Additions From Business Acquisition ProductWarrantyAccrualAdditionsFromBusinessAcquisition	100000	USD
CY2019	us-gaap	Product Warranty Accrual Additions From Business Acquisition ProductWarrantyAccrualAdditionsFromBusinessAcquisition	0	USD
CY2021	ayi	Standard Product Warranty Accrual Increase Decreasefor New Accounting Pronouncements StandardProductWarrantyAccrualIncreaseDecreaseforNewAccountingPronouncements	0	USD
CY2020	ayi	Standard Product Warranty Accrual Increase Decreasefor New Accounting Pronouncements StandardProductWarrantyAccrualIncreaseDecreaseforNewAccountingPronouncements	0	USD
CY2019	ayi	Standard Product Warranty Accrual Increase Decreasefor New Accounting Pronouncements StandardProductWarrantyAccrualIncreaseDecreaseforNewAccountingPronouncements	-14800000	USD
CY2021Q3	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	20300000	USD
CY2021Q3	us-gaap	Contract With Customer Right To Recover Product ContractWithCustomerRightToRecoverProduct	6400000	USD
CY2020Q3	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	16100000	USD
CY2019Q3	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	11500000	USD
CY2021Q2	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	reporting_unit
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3461000000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	427600000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	100100000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3326300000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	353900000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	101100000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3672700000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	462900000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	88300000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	427600000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	353900000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	462900000	USD
CY2021	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	-23200000	USD
CY2020	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	-23300000	USD
CY2019	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	-33300000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-8200000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5900000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-4700000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	396200000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	324700000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	424900000	USD
CY2020Q3	us-gaap	Contract With Customer Right To Recover Product ContractWithCustomerRightToRecoverProduct	10300000	USD
CY2021Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	7700000	USD
CY2020Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	5400000	USD
CY2021Q3	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	56700000	USD
CY2020Q3	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	53600000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3461000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3326300000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3672700000	USD
CY2021	us-gaap	Restructuring Charges RestructuringCharges	3300000	USD
CY2021Q3	us-gaap	Restructuring Reserve RestructuringReserve	1700000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	330400000	USD
CY2021Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	18800000	shares
CY2020Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	15000000	shares
CY2021Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1660000000	USD
CY2020Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1230000000	USD
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	3800000	shares
CY2021Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2020Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	306300000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	248300000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36300000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39500000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39700000	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	300000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	100000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	100000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36600000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39600000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39800000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.44
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.29
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.32
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.38
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.27
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.29
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	65400000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	54600000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	60300000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12800000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12500000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	14700000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	14400000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	16000000.0	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	10200000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2700000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6700000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	9300000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	89900000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76400000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	94500000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	83200000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	68200000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	89200000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	10700000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9700000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	12200000	USD
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2400000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2400000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2100000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	0	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	-2200000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	7600000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	7100000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	18100000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	700000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	1800000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	12200000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	500000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	1400000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-900000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	89900000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	76400000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	94500000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	19000000.0	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	23300000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	155200000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	153100000	USD
CY2021Q3	ayi	Deferred Tax Asset Operating Lease Rightofuse Asset DeferredTaxAssetOperatingLeaseRightofuseAsset	14300000	USD
CY2020Q3	ayi	Deferred Tax Asset Operating Lease Rightofuse Asset DeferredTaxAssetOperatingLeaseRightofuseAsset	15600000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	8200000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	5300000	USD
CY2021Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	196700000	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	197300000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	1800000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	2100000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	9900000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	22200000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	21300000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	22200000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	5400000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	5600000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	41300000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	32000000.0	USD
CY2021Q3	ayi	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	15400000	USD
CY2020Q3	ayi	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	18200000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	12000000.0	USD
CY2020Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9300000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	107100000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	111600000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	9500000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	6500000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2000000.0	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	99100000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	92200000	USD
CY2021Q3	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	165100000	USD
CY2021Q3	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	3300000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	1500000	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17700000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17200000	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	17100000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	16700000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17200000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16600000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4400000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5200000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2300000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	100000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	10900000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	100000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	400000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	4600000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1200000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	100000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	100000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	700000	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17700000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17200000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16600000	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	2000000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1700000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1000000	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2021	us-gaap	Revenues Revenues	3461000000	USD
CY2020	us-gaap	Revenues Revenues	3326300000	USD
CY2019	us-gaap	Revenues Revenues	3672700000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	427600000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	353900000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	462900000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	396200000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	324700000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	424900000	USD
CY2021Q3	us-gaap	Noncurrent Assets NoncurrentAssets	361000000.0	USD
CY2020Q3	us-gaap	Noncurrent Assets NoncurrentAssets	363400000	USD
CY2019Q3	us-gaap	Noncurrent Assets NoncurrentAssets	295000000.0	USD

Files In Submission

Name	View Source	Status
0001144215-21-000097-index-headers.html	Edgar Link	pending
0001144215-21-000097-index.html	Edgar Link	pending
0001144215-21-000097.txt	Edgar Link	pending
0001144215-21-000097-xbrl.zip	Edgar Link	pending
ayi-20210831.htm	Edgar Link	pending
ayi-20210831.xsd	Edgar Link	pending
ayi-20210831xex10iiia14.htm	Edgar Link	pending
ayi-20210831xex10iiia80.htm	Edgar Link	pending
ayi-20210831xex10iiia83.htm	Edgar Link	pending
ayi-20210831xex21.htm	Edgar Link	pending
ayi-20210831xex22.htm	Edgar Link	pending
ayi-20210831xex23.htm	Edgar Link	pending
ayi-20210831xex24.htm	Edgar Link	pending
ayi-20210831xex31a.htm	Edgar Link	pending
ayi-20210831xex31b.htm	Edgar Link	pending
ayi-20210831xex32a.htm	Edgar Link	pending
ayi-20210831xex32b.htm	Edgar Link	pending
ayi-20210831xex4b.htm	Edgar Link	pending
ayi-20210831_cal.xml	Edgar Link	unprocessable
ayi-20210831_def.xml	Edgar Link	unprocessable
ayi-20210831_g1.jpg	Edgar Link	pending
ayi-20210831_htm.xml	Edgar Link	completed
ayi-20210831_lab.xml	Edgar Link	unprocessable
ayi-20210831_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R9999.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$AYI
ACUITY BRANDS INC Stock $ayi

2021 Q3 Form 10-K Financial Statement

#000114421521000097 Filed on October 27, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AYI ACUITY BRANDS INC Stock $ayi

2021 Q3 Form 10-K Financial Statement

#000114421521000097 Filed on October 27, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AYI
ACUITY BRANDS INC Stock $ayi