$AJG
Arthur J. Gallagher & Co.

2024 Q1 Form 10-K Financial Statement

#000095017024013370 Filed on February 09, 2024

View on sec.gov

Income Statement

Concept 2024 Q1 2023 Q4 2023
Revenue $3.257B $2.432B $10.07B
YoY Change 20.35% 19.9% 17.79%
Cost Of Revenue $1.680B $1.467B $5.827B
YoY Change 15.95% 21.44% 17.63%
Gross Profit $1.577B $964.9M $4.245B
YoY Change 25.41% 17.63% 18.01%
Gross Profit Margin 48.42% 39.68% 42.15%
Selling, General & Admin $161.1M
YoY Change 642.4%
% of Gross Profit 3.79%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization $207.7M $189.7M $696.5M
YoY Change 30.3% 23.18% 16.16%
% of Gross Profit 13.17% 19.66% 16.41%
Operating Expenses $597.5M $968.9M $2.764B
YoY Change 2.36% 52.75% 37.25%
Operating Profit $979.4M -$4.000M $1.482B
YoY Change 45.38% -102.15% -6.45%
Interest Expense -$92.80M -$78.20M -$296.7M
YoY Change 36.67% 22.19% 15.49%
% of Operating Profit -9.48% -20.02%
Other Income/Expense, Net
YoY Change
Pretax Income $772.7M -$82.20M $1.185B
YoY Change 27.55% -167.38% -10.69%
Income Tax $160.0M -$42.60M $219.1M
% Of Pretax Income 20.71% 18.49%
Net Earnings $608.4M -$32.20M $969.5M
YoY Change 25.06% -123.76% -12.99%
Net Earnings / Revenue 18.68% -1.32% 9.63%
Basic Earnings Per Share $2.80 $4.51
Diluted Earnings Per Share $2.74 -$0.15 $4.42
COMMON SHARES
Basic Shares Outstanding 216.8M 214.9M
Diluted Shares Outstanding

Balance Sheet

Concept 2024 Q1 2023 Q4 2023
SHORT-TERM ASSETS
Cash & Short-Term Investments $1.763B $971.5M $971.5M
YoY Change 13.72% 183.82% 183.82%
Cash & Equivalents $1.763B $971.5M $971.5M
Short-Term Investments
Other Short-Term Assets $35.57B $27.36B $27.36B
YoY Change 11827.63% 349.72% 349.72%
Inventory
Prepaid Expenses
Receivables $4.149B $3.787B $3.787B
Other Receivables $0.00 $0.00 $0.00
Total Short-Term Assets $41.48B $32.12B $32.12B
YoY Change 44.14% 40.65% 40.65%
LONG-TERM ASSETS
Property, Plant & Equipment $1.091B $1.127B $1.127B
YoY Change 87.66% 22.08% 22.08%
Goodwill $11.53B $11.48B
YoY Change 18.85% 20.93%
Intangibles $4.633B
YoY Change 37.4%
Long-Term Investments
YoY Change
Other Assets $2.252B $2.264B $2.264B
YoY Change 118.93% -1.08% -1.08%
Total Long-Term Assets $19.50B $19.50B $19.50B
YoY Change 19.49% 21.32% 21.32%
TOTAL ASSETS
Total Short-Term Assets $41.48B $32.12B $32.12B
Total Long-Term Assets $19.50B $19.50B $19.50B
Total Assets $60.98B $51.62B $51.62B
YoY Change 35.22% 32.66% 32.66%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses $3.467B $2.553B $2.553B
YoY Change 55.39% 22.09% 22.09%
Deferred Revenue
YoY Change
Short-Term Debt $184.3M $289.0M $289.0M
YoY Change -72.7% 19.47% 19.47%
Long-Term Debt Due $108.2M $670.0M $670.0M
YoY Change -83.97% 116.13% 116.13%
Total Short-Term Liabilities $39.64B $31.06B $31.06B
YoY Change 46.28% 41.93% 41.93%
LONG-TERM LIABILITIES
Long-Term Debt $7.990B $7.006B $7.006B
YoY Change 32.67% 25.94% 25.94%
Other Long-Term Liabilities $2.006B $2.730B $2.730B
YoY Change 14.94% 20.43% 20.43%
Total Long-Term Liabilities $9.995B $9.736B $9.736B
YoY Change 28.69% 24.35% 24.35%
TOTAL LIABILITIES
Total Short-Term Liabilities $39.64B $31.06B $31.06B
Total Long-Term Liabilities $9.995B $9.736B $9.736B
Total Liabilities $49.68B $40.84B $40.84B
YoY Change 40.98% 37.21% 37.21%
SHAREHOLDERS EQUITY
Retained Earnings $4.529B $4.053B
YoY Change 15.24% 13.78%
Common Stock $7.721B $7.515B
YoY Change 10.47% 11.79%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $11.30B $10.78B $10.78B
YoY Change
Total Liabilities & Shareholders Equity $60.98B $51.62B $51.62B
YoY Change 35.22% 32.66% 32.66%

Cashflow Statement

Concept 2024 Q1 2023 Q4 2023
OPERATING ACTIVITIES
Net Income $608.4M -$32.20M $969.5M
YoY Change 25.06% -123.76% -12.99%
Depreciation, Depletion And Amortization $207.7M $189.7M $696.5M
YoY Change 30.3% 23.18% 16.16%
Cash From Operating Activities $789.3M $693.6M $2.032B
YoY Change 84.2% 246.11% -4.41%
INVESTING ACTIVITIES
Capital Expenditures $29.70M $46.00M $193.6M
YoY Change 0.0% 8.49% 5.97%
Acquisitions
YoY Change
Other Investing Activities -$162.2M -$1.855B -$3.099B
YoY Change -28.51% 363.28% 277.01%
Cash From Investing Activities -$191.9M -$1.901B -$3.293B
YoY Change -25.21% 329.3% 227.73%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities -5.400M 982.1M 2.874B
YoY Change -100.56% -488.03% -649.71%
NET CHANGE
Cash From Operating Activities 789.3M 693.6M 2.032B
Cash From Investing Activities -191.9M -1.901B -3.293B
Cash From Financing Activities -5.400M 982.1M 2.874B
Net Change In Cash 592.0M -224.8M 1.579B
YoY Change -47.46% -54.62% 217.15%
FREE CASH FLOW
Cash From Operating Activities $789.3M $693.6M $2.032B
Capital Expenditures $29.70M $46.00M $193.6M
Free Cash Flow $759.6M $647.6M $1.838B
YoY Change 90.47% 309.87% -5.38%

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CY2023 us-gaap Use Of Estimates
UseOfEstimates
<p style="font-size:10pt;margin-top:18pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Use of Estimates</span></p><p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. These accounting principles require us to make estimates and assumptions that affect the reported amounts of assets and liabilities and revenues and expenses, and the disclosure of contingent assets and liabilities at the date of our consolidated financial statements. We periodically evaluate our estimates and assumptions, including those relating to the valuation of goodwill and other intangible assets, right-of-use assets, investments (including our IRC Section 45 investments), income taxes, revenue recognition, deferred costs, stock-based compensation, claims handling obligations, retirement plans, litigation and contingencies. We base our estimates on historical experience and various assumptions that we believe to be reasonable based on specific circumstances. Such estimates and assumptions could change in the future as more information becomes known, which could impact the amounts reported and disclosed herein.</span></p>
CY2023 ajg Description Of Contracts Renewal Period
DescriptionOfContractsRenewalPeriod
one year or less
CY2023 ajg Percentage Of Commissions And Fee Revenues Recognized On Effective Date Of Insurance Contract
PercentageOfCommissionsAndFeeRevenuesRecognizedOnEffectiveDateOfInsuranceContract
0.80
CY2023 ajg Percentage Of Commissions And Fee Revenues Recognized In First Three Months Of Insurance Contract
PercentageOfCommissionsAndFeeRevenuesRecognizedInFirstThreeMonthsOfInsuranceContract
0.15
CY2023 ajg Percentage Of Commissions And Fee Revenues Recognized After First Three Months Of Insurance Contract
PercentageOfCommissionsAndFeeRevenuesRecognizedAfterFirstThreeMonthsOfInsuranceContract
0.05
CY2023 ajg Allowances For Estimated Policy Cancellations
AllowancesForEstimatedPolicyCancellations
9900000
CY2022 ajg Allowances For Estimated Policy Cancellations
AllowancesForEstimatedPolicyCancellations
9300000
CY2023Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
23000000
CY2022Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
11100000
CY2023 ajg Insurance Contracts Premium Financing Terms
InsuranceContractsPremiumFinancingTerms
premium financing contracts are structured to minimize potential bad debt expense to us. Such receivables are generally considered delinquent after seven days of the payment due date. In normal course, insurance policies are canceled within one month of the contractual payment due date if the payment remains delinquent.
CY2023Q4 us-gaap Accounts Receivable Billed For Long Term Contracts Or Programs
AccountsReceivableBilledForLongTermContractsOrPrograms
685700000
CY2022Q4 us-gaap Accounts Receivable Billed For Long Term Contracts Or Programs
AccountsReceivableBilledForLongTermContractsOrPrograms
546300000
CY2021 us-gaap Business Combination Separately Recognized Transactions Additional Disclosures Acquisition Cost Expensed
BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed
35700000
CY2023 us-gaap Business Acquisitions Pro Forma Net Income Loss
BusinessAcquisitionsProFormaNetIncomeLoss
-300700000
CY2022 us-gaap Business Acquisitions Pro Forma Net Income Loss
BusinessAcquisitionsProFormaNetIncomeLoss
-22000000.0
CY2021 us-gaap Business Acquisitions Pro Forma Net Income Loss
BusinessAcquisitionsProFormaNetIncomeLoss
-83900000
CY2023 us-gaap Number Of Businesses Acquired
NumberOfBusinessesAcquired
80
CY2022 us-gaap Number Of Businesses Acquired
NumberOfBusinessesAcquired
89
CY2023 us-gaap Impairment Of Intangible Assets Finitelived
ImpairmentOfIntangibleAssetsFinitelived
3500000
CY2022 us-gaap Impairment Of Intangible Assets Finitelived
ImpairmentOfIntangibleAssetsFinitelived
2000000.0
CY2021 us-gaap Impairment Of Intangible Assets Finitelived
ImpairmentOfIntangibleAssetsFinitelived
17600000
CY2021 us-gaap Number Of Businesses Acquired
NumberOfBusinessesAcquired
99
CY2023 ajg Business Combination Aggregate Earnout Obligation Maximum
BusinessCombinationAggregateEarnoutObligationMaximum
2009800000
CY2023 ajg Business Combination Aggregate Earnout Obligation Recorded Maximum
BusinessCombinationAggregateEarnoutObligationRecordedMaximum
1294200000
CY2023Q4 ajg Business Combination Aggregate Earnout Obligation Expected Settlement In Cash Or Stock At Option
BusinessCombinationAggregateEarnoutObligationExpectedSettlementInCashOrStockAtOption
564800000
CY2023 us-gaap Business Combination Separately Recognized Transactions Additional Disclosures Acquisition Cost Expensed
BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed
76600000
CY2022 us-gaap Business Combination Separately Recognized Transactions Additional Disclosures Acquisition Cost Expensed
BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed
61000000
CY2023Q4 ajg Business Combination Aggregate Earnout Obligation Expected Settlement In Cash
BusinessCombinationAggregateEarnoutObligationExpectedSettlementInCash
729400000
CY2022 ajg Business Combination Aggregate Earnout Obligation Maximum
BusinessCombinationAggregateEarnoutObligationMaximum
1946200000
CY2022 ajg Business Combination Aggregate Earnout Obligation Recorded Maximum
BusinessCombinationAggregateEarnoutObligationRecordedMaximum
1077300000
CY2022Q4 ajg Business Combination Aggregate Earnout Obligation Expected Settlement In Cash Or Stock At Option
BusinessCombinationAggregateEarnoutObligationExpectedSettlementInCashOrStockAtOption
734000000
CY2022Q4 ajg Business Combination Aggregate Earnout Obligation Expected Settlement In Cash
BusinessCombinationAggregateEarnoutObligationExpectedSettlementInCash
343300000
CY2023Q4 ajg Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Cash And Equivalents And Restricted Cash
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalentsAndRestrictedCash
146000000
CY2023Q4 ajg Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Fiduciary Assets Current
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiduciaryAssetsCurrent
190400000
CY2023Q4 us-gaap Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Other
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther
177200000
CY2023Q4 us-gaap Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
112100000
CY2023Q4 us-gaap Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Assets
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets
85600000
CY2023Q4 ajg Business Acquisitions Purchase Price Allocation Goodwill Amount
BusinessAcquisitionsPurchasePriceAllocationGoodwillAmount
1789200000
CY2023Q4 ajg Expiration Lists
ExpirationLists
1721000000
CY2023Q4 us-gaap Finite Lived Noncompete Agreements Gross
FiniteLivedNoncompeteAgreementsGross
30500000
CY2023Q4 us-gaap Finite Lived Trade Names Gross
FiniteLivedTradeNamesGross
64300000
CY2023Q4 us-gaap Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
4316300000
CY2023Q4 ajg Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Fiduciary Liabilities Current
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiduciaryLiabilitiesCurrent
190400000
CY2023Q4 us-gaap Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
149800000
CY2023Q4 us-gaap Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities
233500000
CY2023Q4 us-gaap Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
573700000
CY2023Q4 us-gaap Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
3742600000
CY2023 us-gaap Business Acquisitions Pro Forma Revenue
BusinessAcquisitionsProFormaRevenue
10579800000
CY2022 us-gaap Business Acquisitions Pro Forma Revenue
BusinessAcquisitionsProFormaRevenue
9390700000
CY2023 ajg Business Acquisitions Pro Forma Net Income Loss To Controlling Interest
BusinessAcquisitionsProFormaNetIncomeLossToControllingInterest
954400000
CY2022 ajg Business Acquisitions Pro Forma Net Income Loss To Controlling Interest
BusinessAcquisitionsProFormaNetIncomeLossToControllingInterest
1091500000
CY2023 us-gaap Business Acquisition Pro Forma Earnings Per Share Basic
BusinessAcquisitionProFormaEarningsPerShareBasic
4.42
CY2022 us-gaap Business Acquisition Pro Forma Earnings Per Share Basic
BusinessAcquisitionProFormaEarningsPerShareBasic
5.15
CY2023 us-gaap Business Acquisition Pro Forma Earnings Per Share Diluted
BusinessAcquisitionProFormaEarningsPerShareDiluted
4.33
CY2022 us-gaap Business Acquisition Pro Forma Earnings Per Share Diluted
BusinessAcquisitionProFormaEarningsPerShareDiluted
5.05
CY2023Q4 us-gaap Unbilled Contracts Receivable
UnbilledContractsReceivable
1093700000
CY2022 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
319600000
CY2022 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
71700000
CY2022 ajg Net Change In Accrued Compensation And Other Accrued Liabilities
NetChangeInAccruedCompensationAndOtherAccruedLiabilities
-119000000
CY2022 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
1390000000
CY2022Q4 us-gaap Unbilled Contracts Receivable
UnbilledContractsReceivable
910900000
CY2023Q4 us-gaap Capitalized Contract Cost Net
CapitalizedContractCostNet
169100000
CY2022Q4 us-gaap Capitalized Contract Cost Net
CapitalizedContractCostNet
144500000
CY2023Q4 us-gaap Contract With Customer Liability
ContractWithCustomerLiability
706200000
CY2022Q4 us-gaap Contract With Customer Liability
ContractWithCustomerLiability
609300000
CY2021Q4 us-gaap Contract With Customer Liability
ContractWithCustomerLiability
579600000
CY2022 ajg Contract With Customer Liability Additions
ContractWithCustomerLiabilityAdditions
445500000
CY2022 us-gaap Contract With Customer Liability Revenue Recognized
ContractWithCustomerLiabilityRevenueRecognized
430900000
CY2022 ajg Net Change In Collected Billings And Deposits Received From Customers
NetChangeInCollectedBillingsAndDepositsReceivedFromCustomers
14400000
CY2022 ajg Contract With Customer Impact Of Change In Foreign Exchange Rates
ContractWithCustomerImpactOfChangeInForeignExchangeRates
-17900000
CY2022 us-gaap Contract With Customer Liability Increase Decrease For Contract Acquired In Business Combination
ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination
18600000
CY2022Q4 us-gaap Contract With Customer Liability
ContractWithCustomerLiability
609300000
CY2023 ajg Contract With Customer Liability Additions
ContractWithCustomerLiabilityAdditions
493000000.0
CY2023 us-gaap Contract With Customer Liability Revenue Recognized
ContractWithCustomerLiabilityRevenueRecognized
462000000.0
CY2023 ajg Net Change In Collected Billings And Deposits Received From Customers
NetChangeInCollectedBillingsAndDepositsReceivedFromCustomers
-13000000.0
CY2023 ajg Contract With Customer Impact Of Change In Foreign Exchange Rates
ContractWithCustomerImpactOfChangeInForeignExchangeRates
-15200000
CY2023 us-gaap Contract With Customer Liability Increase Decrease For Contract Acquired In Business Combination
ContractWithCustomerLiabilityIncreaseDecreaseForContractAcquiredInBusinessCombination
37700000
CY2023Q4 us-gaap Contract With Customer Liability
ContractWithCustomerLiability
706200000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
706200000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
541100000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
99800000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
30000000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
15600000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
8400000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
11300000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
706200000
CY2023Q4 us-gaap Capitalized Contract Cost Net
CapitalizedContractCostNet
169100000
CY2022Q4 us-gaap Capitalized Contract Cost Net
CapitalizedContractCostNet
144500000
CY2023Q4 us-gaap Capitalized Contract Cost Accumulated Amortization
CapitalizedContractCostAccumulatedAmortization
570800000
CY2022Q4 us-gaap Capitalized Contract Cost Accumulated Amortization
CapitalizedContractCostAccumulatedAmortization
504400000
CY2022Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
738400000
CY2022Q4 ajg Fiduciary Assets Current
FiduciaryAssetsCurrent
18236700000
CY2022Q4 us-gaap Accounts Receivable Net Current
AccountsReceivableNetCurrent
2911100000
CY2022Q4 us-gaap Other Assets Current
OtherAssetsCurrent
399000000
CY2022Q4 us-gaap Assets Current
AssetsCurrent
22285200000
CY2022Q4 us-gaap Assets
Assets
38358400000
CY2022Q4 ajg Fiduciary Liabilities Current
FiduciaryLiabilitiesCurrent
18236700000
CY2022Q4 ajg Accrued Compensation And Other Accrued Liabilities
AccruedCompensationAndOtherAccruedLiabilities
2003300000
CY2022Q4 us-gaap Liabilities Current
LiabilitiesCurrent
21338600000
CY2022Q4 us-gaap Liabilities
Liabilities
29168200000
CY2022Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
38358400000
CY2022 ajg Proceeds From Fiduciary Assets And Liabilities
ProceedsFromFiduciaryAssetsAndLiabilities
735400000
CY2022Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
1462300000
CY2023Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
1023900000
CY2022Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
886100000
CY2022 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
212600000
CY2021 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
172300000
CY2021 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
102800000
CY2021 ajg Net Change In Accrued Compensation And Other Accrued Liabilities
NetChangeInAccruedCompensationAndOtherAccruedLiabilities
-217300000
CY2021 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
1392400000
CY2021 ajg Proceeds From Fiduciary Assets And Liabilities
ProceedsFromFiduciaryAssetsAndLiabilities
311700000
CY2021 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
2995800000
CY2023Q4 us-gaap Machinery And Equipment Gross
MachineryAndEquipmentGross
32900000
CY2022Q4 us-gaap Machinery And Equipment Gross
MachineryAndEquipmentGross
32200000
CY2023Q4 us-gaap Furniture And Fixtures Gross
FurnitureAndFixturesGross
154100000
CY2022Q4 us-gaap Furniture And Fixtures Gross
FurnitureAndFixturesGross
142000000.0
CY2023Q4 us-gaap Leasehold Improvements Gross
LeaseholdImprovementsGross
232600000
CY2022Q4 us-gaap Leasehold Improvements Gross
LeaseholdImprovementsGross
190700000
CY2023Q4 ajg Computer Equipment Gross
ComputerEquipmentGross
353500000
CY2022Q4 ajg Computer Equipment Gross
ComputerEquipmentGross
295800000
CY2023Q4 ajg Land And Buildings Gross
LandAndBuildingsGross
168900000
CY2022Q4 ajg Land And Buildings Gross
LandAndBuildingsGross
145300000
CY2023Q4 us-gaap Capitalized Computer Software Gross
CapitalizedComputerSoftwareGross
722900000
CY2022Q4 us-gaap Capitalized Computer Software Gross
CapitalizedComputerSoftwareGross
583400000
CY2023Q4 us-gaap Property Plant And Equipment Other
PropertyPlantAndEquipmentOther
31300000
CY2022Q4 us-gaap Property Plant And Equipment Other
PropertyPlantAndEquipmentOther
16900000
CY2023Q4 us-gaap Construction In Progress Gross
ConstructionInProgressGross
54100000
CY2022Q4 us-gaap Construction In Progress Gross
ConstructionInProgressGross
56000000.0
CY2023Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
1750300000
CY2023Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
726400000
CY2022Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
576200000
CY2023Q4 us-gaap Goodwill
Goodwill
11475600000
CY2022Q4 us-gaap Goodwill
Goodwill
9489400000
CY2021Q4 us-gaap Goodwill
Goodwill
8666200000
CY2022 us-gaap Goodwill Acquired During Period
GoodwillAcquiredDuringPeriod
709900000
CY2022 us-gaap Goodwill Purchase Accounting Adjustments
GoodwillPurchaseAccountingAdjustments
426900000
CY2022 us-gaap Goodwill Translation And Purchase Accounting Adjustments
GoodwillTranslationAndPurchaseAccountingAdjustments
-313600000
CY2022Q4 us-gaap Goodwill
Goodwill
9489400000
CY2023 us-gaap Goodwill Acquired During Period
GoodwillAcquiredDuringPeriod
1789200000
CY2023 us-gaap Goodwill Purchase Accounting Adjustments
GoodwillPurchaseAccountingAdjustments
19900000
CY2023 us-gaap Goodwill Translation And Purchase Accounting Adjustments
GoodwillTranslationAndPurchaseAccountingAdjustments
177100000
CY2023Q4 us-gaap Goodwill
Goodwill
11475600000
CY2023Q4 us-gaap Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
4633300000
CY2022Q4 us-gaap Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
3372100000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
623200000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Two
FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
580700000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Three
FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
537700000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Four
FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
500500000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
459200000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense After Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
1932000000
CY2023Q4 us-gaap Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
4633300000
CY2023Q4 us-gaap Debt Instrument Interest Rate Stated Percentage
DebtInstrumentInterestRateStatedPercentage
0.0675
CY2022Q4 us-gaap Debt Instrument Interest Rate Stated Percentage
DebtInstrumentInterestRateStatedPercentage
0.0675
CY2023Q4 ajg Debt Long Term And Short Term Combined Amount Gross
DebtLongTermAndShortTermCombinedAmountGross
8032000000
CY2022Q4 ajg Debt Long Term And Short Term Combined Amount Gross
DebtLongTermAndShortTermCombinedAmountGross
6499900000
CY2023Q4 us-gaap Unamortized Debt Issuance Expense
UnamortizedDebtIssuanceExpense
38400000
CY2022Q4 us-gaap Unamortized Debt Issuance Expense
UnamortizedDebtIssuanceExpense
20600000
CY2023Q4 us-gaap Debt Instrument Unamortized Discount
DebtInstrumentUnamortizedDiscount
28600000
CY2022Q4 us-gaap Debt Instrument Unamortized Discount
DebtInstrumentUnamortizedDiscount
14600000
CY2023Q4 us-gaap Debt Longterm And Shortterm Combined Amount
DebtLongtermAndShorttermCombinedAmount
7965000000
CY2022Q4 us-gaap Debt Longterm And Shortterm Combined Amount
DebtLongtermAndShorttermCombinedAmount
6464700000
CY2023 us-gaap Net Income Loss
NetIncomeLoss
969500000
CY2022 us-gaap Net Income Loss
NetIncomeLoss
1114200000
CY2021 us-gaap Net Income Loss
NetIncomeLoss
906800000
CY2023 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
214900000
CY2022 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
210300000
CY2021 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
202700000
CY2023 us-gaap Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
4400000
CY2022 us-gaap Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
4400000
CY2021 us-gaap Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
4600000
CY2023 ajg Weighted Average Number Of Common And Common Equivalent Shares Outstanding
WeightedAverageNumberOfCommonAndCommonEquivalentSharesOutstanding
219300000
CY2022 ajg Weighted Average Number Of Common And Common Equivalent Shares Outstanding
WeightedAverageNumberOfCommonAndCommonEquivalentSharesOutstanding
214700000
CY2021 ajg Weighted Average Number Of Common And Common Equivalent Shares Outstanding
WeightedAverageNumberOfCommonAndCommonEquivalentSharesOutstanding
207300000
CY2023 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
4.51
CY2022 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
5.3
CY2021 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
4.47
CY2023 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
4.42
CY2022 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
5.19
CY2021 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
4.37
CY2023 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
900000
CY2022 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
2000000
CY2021 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
1300000
CY2023 us-gaap Stock Granted During Period Value Sharebased Compensation
StockGrantedDuringPeriodValueSharebasedCompensation
33500000
CY2022 us-gaap Stock Granted During Period Value Sharebased Compensation
StockGrantedDuringPeriodValueSharebasedCompensation
27900000
CY2021 us-gaap Stock Granted During Period Value Sharebased Compensation
StockGrantedDuringPeriodValueSharebasedCompensation
17500000
CY2022 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
53.53
CY2022 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
200000
CY2022 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
109.10
CY2022Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
8300000
CY2022Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
107.47
CY2022 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P4Y2M4D
CY2022Q4 ajg Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAggregateIntrinsicValue
668900000
CY2023 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0.012
CY2022 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0.013
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0.015
CY2023 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.036
CY2022 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.019
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
0.009
CY2023 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
0.250
CY2022 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
0.231
CY2021 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
0.229
CY2023 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P5Y6M
CY2022 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P5Y4M24D
CY2021 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P5Y4M24D
CY2022Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
8300000
CY2022Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
107.47
CY2023 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
1200000
CY2023 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
177.78
CY2023 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
1300000
CY2023 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
62.33
CY2023 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
300000
CY2023 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
143.78
CY2023Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
7900000
CY2023Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
123.85
CY2023 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P3Y11M19D
CY2023Q4 ajg Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAggregateIntrinsicValue
793900000
CY2023Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
1800000
CY2023Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
73.04
CY2023 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
P1Y7M17D
CY2023Q4 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
266400000
CY2023Q4 ajg Share Based Compensation Arrangement By Share Based Payment Award Options Non Vested And Expected To Vest Number Of Shares
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonVestedAndExpectedToVestNumberOfShares
5700000
CY2023Q4 ajg Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested And Expected To Vest Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedAndExpectedToVestExercisableWeightedAverageExercisePrice
137.02
CY2023 ajg Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm
P4Y7M6D
CY2023Q4 ajg Sharebased Compensation Arrangement Non Vested And Expected To Vest Outstanding Aggregate Intrinsic Value
SharebasedCompensationArrangementNonVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
497200000
CY2021Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
7500000
CY2021Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
81.30
CY2022 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
2400000
CY2022 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
157.74
CY2022 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
1400000
CY2022Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
1800000
CY2022Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
61.11
CY2022 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
P1Y6M21D
CY2022Q4 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
230800000
CY2022Q4 ajg Share Based Compensation Arrangement By Share Based Payment Award Options Non Vested And Expected To Vest Number Of Shares
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonVestedAndExpectedToVestNumberOfShares
5900000
CY2022Q4 ajg Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested And Expected To Vest Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedAndExpectedToVestExercisableWeightedAverageExercisePrice
118.80
CY2022 ajg Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm
P4Y10M9D
CY2022Q4 ajg Sharebased Compensation Arrangement Non Vested And Expected To Vest Outstanding Aggregate Intrinsic Value
SharebasedCompensationArrangementNonVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
413200000
CY2023 ajg Share Based Compensation Arrangement By Share Based Payment Award Options Exercised In Period Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodIntrinsicValue
181600000
CY2022 ajg Share Based Compensation Arrangement By Share Based Payment Award Options Exercised In Period Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodIntrinsicValue
168200000
CY2021 ajg Share Based Compensation Arrangement By Share Based Payment Award Options Exercised In Period Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodIntrinsicValue
127400000
CY2023Q4 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
106600000
CY2023 ajg Weighted Average Period
WeightedAveragePeriod
P4Y
CY2023 us-gaap Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit
ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
55.94
CY2023 us-gaap Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit
ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
202.13
CY2023Q4 us-gaap Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options
ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
7.9
CY2023 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P3Y11M19D
CY2023Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
123.85
CY2023Q4 us-gaap Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options
ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
1.8
CY2023Q4 us-gaap Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1
SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
73.04
CY2023 ajg Deferred Equity Participation Plan Distributions To Key Executives Age
DeferredEquityParticipationPlanDistributionsToKeyExecutivesAge
age 62 (or the one-year anniversary of the date of the grant for participants over the age of 61 as of the grant date) or upon or after their actual retirement if later.
CY2023 ajg Deferred Equity Participation Sub Plan Distributions Requisite Service Description
DeferredEquityParticipationSubPlanDistributionsRequisiteServiceDescription
we annually make awards under sub-plans of the DEPP for certain production staff, which generally provide for vesting and/or distributions no sooner than five years from the date of awards, although certain awards vest and/or distribute after the earlier of fifteen years or the participant reaching age 65.
CY2023 ajg Deferred Equity Participation Sub Plan Distributions To Key Executives Age
DeferredEquityParticipationSubPlanDistributionsToKeyExecutivesAge
age 65
CY2022Q4 us-gaap Defined Benefit Plan Benefit Obligation
DefinedBenefitPlanBenefitObligation
211900000
CY2021Q4 us-gaap Defined Benefit Plan Benefit Obligation
DefinedBenefitPlanBenefitObligation
279400000
CY2023 us-gaap Defined Benefit Plan Service Cost
DefinedBenefitPlanServiceCost
3300000
CY2022 us-gaap Defined Benefit Plan Service Cost
DefinedBenefitPlanServiceCost
500000
CY2023 us-gaap Defined Benefit Plan Interest Cost
DefinedBenefitPlanInterestCost
10700000
CY2022 us-gaap Defined Benefit Plan Interest Cost
DefinedBenefitPlanInterestCost
6800000
CY2023 us-gaap Defined Benefit Plan Actuarial Gain Loss
DefinedBenefitPlanActuarialGainLoss
-8800000
CY2022 us-gaap Defined Benefit Plan Actuarial Gain Loss
DefinedBenefitPlanActuarialGainLoss
58700000
CY2023 us-gaap Defined Benefit Plan Benefit Obligation Benefits Paid
DefinedBenefitPlanBenefitObligationBenefitsPaid
18700000
CY2022 us-gaap Defined Benefit Plan Benefit Obligation Benefits Paid
DefinedBenefitPlanBenefitObligationBenefitsPaid
16100000
CY2023Q4 us-gaap Defined Benefit Plan Benefit Obligation
DefinedBenefitPlanBenefitObligation
216000000.0
CY2022Q4 us-gaap Defined Benefit Plan Benefit Obligation
DefinedBenefitPlanBenefitObligation
211900000
CY2022Q4 us-gaap Defined Benefit Plan Fair Value Of Plan Assets
DefinedBenefitPlanFairValueOfPlanAssets
212500000
CY2021Q4 us-gaap Defined Benefit Plan Fair Value Of Plan Assets
DefinedBenefitPlanFairValueOfPlanAssets
282300000
CY2023 us-gaap Defined Benefit Plan Actual Return On Plan Assets
DefinedBenefitPlanActualReturnOnPlanAssets
35100000
CY2022 us-gaap Defined Benefit Plan Actual Return On Plan Assets
DefinedBenefitPlanActualReturnOnPlanAssets
-53700000
CY2023 us-gaap Defined Benefit Plan Plan Assets Benefits Paid
DefinedBenefitPlanPlanAssetsBenefitsPaid
18700000
CY2022 us-gaap Defined Benefit Plan Plan Assets Benefits Paid
DefinedBenefitPlanPlanAssetsBenefitsPaid
16100000
CY2023Q4 us-gaap Defined Benefit Plan Fair Value Of Plan Assets
DefinedBenefitPlanFairValueOfPlanAssets
228900000
CY2022Q4 us-gaap Defined Benefit Plan Fair Value Of Plan Assets
DefinedBenefitPlanFairValueOfPlanAssets
212500000
CY2023Q4 us-gaap Defined Benefit Plan Funded Status Of Plan
DefinedBenefitPlanFundedStatusOfPlan
12900000
CY2022Q4 us-gaap Defined Benefit Plan Funded Status Of Plan
DefinedBenefitPlanFundedStatusOfPlan
600000
CY2023Q4 ajg Pension And Other Post Retirement Defined Benefit Plans Assets Liabilities Noncurrent
PensionAndOtherPostRetirementDefinedBenefitPlansAssetsLiabilitiesNoncurrent
12900000
CY2022Q4 ajg Pension And Other Post Retirement Defined Benefit Plans Assets Liabilities Noncurrent
PensionAndOtherPostRetirementDefinedBenefitPlansAssetsLiabilitiesNoncurrent
600000
CY2023Q4 us-gaap Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
37300000
CY2022Q4 us-gaap Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax
DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
54200000
CY2023Q4 ajg Defined Benefit Plan Net Amount Included In Retained Earning
DefinedBenefitPlanNetAmountIncludedInRetainedEarning
50200000
CY2022Q4 ajg Defined Benefit Plan Net Amount Included In Retained Earning
DefinedBenefitPlanNetAmountIncludedInRetainedEarning
54800000
CY2023 us-gaap Defined Benefit Plan Service Cost
DefinedBenefitPlanServiceCost
3300000
CY2022 us-gaap Defined Benefit Plan Service Cost
DefinedBenefitPlanServiceCost
500000
CY2021 us-gaap Defined Benefit Plan Service Cost
DefinedBenefitPlanServiceCost
500000
CY2023 us-gaap Defined Benefit Plan Interest Cost
DefinedBenefitPlanInterestCost
10700000
CY2022 us-gaap Defined Benefit Plan Interest Cost
DefinedBenefitPlanInterestCost
6800000
CY2021 us-gaap Defined Benefit Plan Interest Cost
DefinedBenefitPlanInterestCost
6400000
CY2023 us-gaap Defined Benefit Plan Expected Return On Plan Assets
DefinedBenefitPlanExpectedReturnOnPlanAssets
14200000
CY2022 us-gaap Defined Benefit Plan Expected Return On Plan Assets
DefinedBenefitPlanExpectedReturnOnPlanAssets
19100000
CY2021 us-gaap Defined Benefit Plan Expected Return On Plan Assets
DefinedBenefitPlanExpectedReturnOnPlanAssets
17700000
CY2023 us-gaap Defined Benefit Plan Amortization Of Gains Losses
DefinedBenefitPlanAmortizationOfGainsLosses
-4900000
CY2022 us-gaap Defined Benefit Plan Amortization Of Gains Losses
DefinedBenefitPlanAmortizationOfGainsLosses
-2400000
CY2021 us-gaap Defined Benefit Plan Amortization Of Gains Losses
DefinedBenefitPlanAmortizationOfGainsLosses
-5900000
CY2023 us-gaap Defined Benefit Plan Net Periodic Benefit Cost
DefinedBenefitPlanNetPeriodicBenefitCost
4700000
CY2022 us-gaap Defined Benefit Plan Net Periodic Benefit Cost
DefinedBenefitPlanNetPeriodicBenefitCost
-9400000
CY2021 us-gaap Defined Benefit Plan Net Periodic Benefit Cost
DefinedBenefitPlanNetPeriodicBenefitCost
-4900000
CY2023 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax
12000000
CY2022 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax
-14100000
CY2021 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax
19900000
CY2023 us-gaap Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
4900000
CY2022 us-gaap Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
2400000
CY2021 us-gaap Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax
OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
5900000
CY2023 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
-16900000
CY2022 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
11700000
CY2022 ajg Expected Period Of Return On Plan Assets
ExpectedPeriodOfReturnOnPlanAssets
P10Y
CY2021 us-gaap Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
-25800000
CY2023 us-gaap Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss Before Tax
AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax
-12200000
CY2022 us-gaap Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss Before Tax
AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax
2300000
CY2021 us-gaap Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss Before Tax
AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax
-30700000
CY2023Q4 us-gaap Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
0.0475
CY2022Q4 us-gaap Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
0.0525
CY2023 ajg Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Return On Plan Assets
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationExpectedLongTermReturnOnPlanAssets
0.0700
CY2022 ajg Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Return On Plan Assets
DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationExpectedLongTermReturnOnPlanAssets
0.0700
CY2023 us-gaap Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
0.0525
CY2022 us-gaap Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
0.0250
CY2021 us-gaap Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
0.0225
CY2023 us-gaap Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
0.0700
CY2022 us-gaap Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
0.0700
CY2021 us-gaap Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets
DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
0.0700
CY2022Q4 us-gaap Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months
DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
20200000
CY2022Q4 us-gaap Defined Benefit Plan Expected Future Benefit Payments Year Two
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
17400000
CY2022Q4 us-gaap Defined Benefit Plan Expected Future Benefit Payments Year Three
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
17400000
CY2022Q4 us-gaap Defined Benefit Plan Expected Future Benefit Payments Year Four
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
17400000
CY2022Q4 us-gaap Defined Benefit Plan Expected Future Benefit Payments Year Five
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
17200000
CY2022Q4 us-gaap Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter
DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
80000000.0
CY2023Q4 us-gaap Defined Benefit Plan Weighted Average Asset Allocations
DefinedBenefitPlanWeightedAverageAssetAllocations
1.000
CY2022Q4 us-gaap Defined Benefit Plan Weighted Average Asset Allocations
DefinedBenefitPlanWeightedAverageAssetAllocations
1.000
CY2023 ajg Expected Period Of Return On Plan Assets
ExpectedPeriodOfReturnOnPlanAssets
P10Y
CY2023Q4 us-gaap Defined Benefit Plan Fair Value Of Plan Assets
DefinedBenefitPlanFairValueOfPlanAssets
228900000
CY2022Q4 us-gaap Defined Benefit Plan Fair Value Of Plan Assets
DefinedBenefitPlanFairValueOfPlanAssets
212500000
CY2023 us-gaap Defined Benefit Plan Contributions By Employer
DefinedBenefitPlanContributionsByEmployer
0
CY2022 us-gaap Defined Benefit Plan Contributions By Employer
DefinedBenefitPlanContributionsByEmployer
0
CY2021 us-gaap Defined Benefit Plan Contributions By Employer
DefinedBenefitPlanContributionsByEmployer
0
CY2023 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
0
CY2022 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
0
CY2021 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
0
CY2023Q4 ajg Number Of Certified Low Income Housing Developments Investment
NumberOfCertifiedLowIncomeHousingDevelopmentsInvestment
5
CY2023 us-gaap Lease Cost
LeaseCost
159800000
CY2023 ajg Operating Leases Cash Flow Related Information
OperatingLeasesCashFlowRelatedInformation
<table style="margin-left:auto;border-spacing:0;table-layout:fixed;width:100.0%;border-collapse:separate;margin-right:auto;"> <tr style="visibility:collapse;"> <td style="width:85.5%;"></td> <td style="width:1%;"></td> <td style="width:1%;"></td> <td style="width:11.5%;"></td> <td style="width:1%;"></td> </tr> <tr style="height:8pt;background-color:#ffffff;white-space:pre-wrap;word-break:break-word;"> <td style="vertical-align:top;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="vertical-align:top;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td colspan="2" style="vertical-align:bottom;text-align:left;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Year ended</span></p></td> <td style="vertical-align:bottom;text-align:left;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> </tr> <tr style="height:8pt;background-color:#ffffff;white-space:pre-wrap;word-break:break-word;"> <td style="vertical-align:top;border-bottom:0.5pt solid #000000;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Supplemental Cash Flow Information Related to Leases (in millions)</span></p></td> <td style="vertical-align:top;border-bottom:0.5pt solid #ffffff03;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td colspan="2" style="vertical-align:bottom;border-bottom:0.5pt solid #000000;text-align:left;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">December 31, 2023</span></p></td> <td style="vertical-align:bottom;border-bottom:0.5pt solid #ffffff03;text-align:left;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> </tr> <tr style="height:10pt;background-color:#cff0fc;white-space:pre-wrap;word-break:break-word;"> <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Cash paid for amounts included in the measurement of<br/>   lease liabilities:</span></p></td> <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td colspan="2" style="vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> </tr> <tr style="height:10pt;background-color:#ffffff;word-break:break-word;"> <td style="text-indent:10pt;white-space:pre-wrap;vertical-align:top;"><p style="margin-left:10pt;text-indent:0;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Operating cash flows from operating leases</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;min-width:fit-content;">$</span></p></td> <td style="white-space:pre-wrap;vertical-align:bottom;text-align:center;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:right;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">125.1</span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> </tr> <tr style="height:10pt;background-color:#cff0fc;word-break:break-word;"> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Right-of-use assets obtained in exchange for new<br/>   operating lease liabilities</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;min-width:fit-content;">$</span></p></td> <td style="white-space:pre-wrap;vertical-align:bottom;text-align:center;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:right;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">150.1</span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> </tr> </table>
CY2023 us-gaap Operating Lease Payments
OperatingLeasePayments
125100000
CY2023 us-gaap Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
150100000
CY2023 ajg Operating Lease Related Assets And Liabilities And Other Related Information
OperatingLeaseRelatedAssetsAndLiabilitiesAndOtherRelatedInformation
<p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Supplemental balance sheet information related to leases is as follows (in millions, except lease term and discount rate):</span></p><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:12pt;font-family:Arial;min-width:fit-content;"> </span></p> <table style="margin-left:auto;border-spacing:0;table-layout:fixed;width:100.0%;border-collapse:separate;margin-right:auto;"> <tr style="visibility:collapse;"> <td style="width:57.22%;"></td> <td style="width:1%;"></td> <td style="width:26%;"></td> <td style="width:1%;"></td> <td style="width:1%;"></td> <td style="width:12.78%;"></td> <td style="width:1%;"></td> </tr> <tr style="height:8pt;background-color:#ffffff;white-space:pre-wrap;word-break:break-word;"> <td style="vertical-align:bottom;border-bottom:0.5pt solid #000000;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Lease Components</span></p></td> <td style="vertical-align:top;border-bottom:0.5pt solid #ffffff03;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="vertical-align:bottom;border-bottom:0.5pt solid #000000;text-align:left;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Balance Sheet Classification</span></p></td> <td style="vertical-align:top;border-bottom:0.5pt solid #ffffff03;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td colspan="2" style="vertical-align:bottom;border-bottom:0.5pt solid #000000;text-align:left;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">December 31, 2023</span></p></td> <td style="vertical-align:bottom;border-bottom:0.5pt solid #ffffff03;text-align:left;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> </tr> <tr style="height:10pt;background-color:#cff0fc;word-break:break-word;"> <td style="white-space:pre-wrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Lease right-of-use assets</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Right-of-use assets</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:nowrap;vertical-align:bottom;border-bottom:2.25pt double #000000;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;min-width:fit-content;">$</span></p></td> <td style="white-space:pre-wrap;vertical-align:bottom;border-bottom:2.25pt double #000000;text-align:center;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:right;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">400.3</span></p></td> <td style="white-space:nowrap;vertical-align:bottom;border-bottom:2.25pt double #ffffff03;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> </tr> <tr style="height:10pt;background-color:#ffffff;word-break:break-word;"> <td style="white-space:pre-wrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Other current lease liabilities</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span><span style="-sec-ix-hidden:F_4d402c76-7853-4cdf-aadd-a3624651b60b;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Accrued compensation and other current liabilities</span></span></span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:bottom;text-align:center;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:right;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">84.2</span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> </tr> <tr style="height:10pt;background-color:#cff0fc;word-break:break-word;"> <td style="white-space:pre-wrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Lease liabilities</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Lease liabilities - noncurrent</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:nowrap;vertical-align:middle;border-bottom:0.5pt solid #000000;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:middle;border-bottom:0.5pt solid #000000;text-align:center;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:right;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">352.2</span></p></td> <td style="white-space:nowrap;vertical-align:middle;border-bottom:0.5pt solid #ffffff03;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> </tr> <tr style="height:10pt;background-color:#ffffff;word-break:break-word;"> <td style="text-indent:10pt;white-space:pre-wrap;vertical-align:bottom;"><p style="margin-left:10pt;text-indent:0;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Total lease liabilities</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:nowrap;vertical-align:bottom;border-bottom:2.25pt double #000000;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;min-width:fit-content;">$</span></p></td> <td style="white-space:pre-wrap;vertical-align:bottom;border-bottom:2.25pt double #000000;text-align:center;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:right;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">436.4</span></p></td> <td style="white-space:nowrap;vertical-align:bottom;border-bottom:2.25pt double #ffffff03;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> </tr> <tr style="height:10pt;background-color:#cff0fc;word-break:break-word;"> <td style="white-space:pre-wrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Weighted-average remaining lease term, years</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:bottom;text-align:center;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:right;"><span><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">5.4</span></span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> </tr> <tr style="height:10pt;background-color:#ffffff;word-break:break-word;"> <td style="white-space:pre-wrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Weighted-average discount rate</span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;"> </span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="min-width:fit-content;"> </span></p></td> <td style="white-space:pre-wrap;vertical-align:bottom;text-align:center;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:right;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">4.2</span></p></td> <td style="white-space:nowrap;vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;min-width:fit-content;">%</span></p></td> </tr> </table>
CY2023Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
400300000
CY2023Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
84200000
CY2023Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
352200000
CY2023Q4 us-gaap Operating Lease Liability
OperatingLeaseLiability
436400000
CY2023Q4 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P5Y4M24D
CY2023Q4 us-gaap Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
0.042
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
108900000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
100400000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
84000000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
67600000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
50600000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due After Year Five
LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
81800000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
493300000
CY2023Q4 us-gaap Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
56900000
CY2023Q4 us-gaap Operating Lease Liability
OperatingLeaseLiability
436400000
CY2023 us-gaap Lessee Operating Lease Option To Extend
LesseeOperatingLeaseOptionToExtend
10.0 years
CY2023Q4 ajg Operating Lease Liability Not Yet Commenced
OperatingLeaseLiabilityNotYetCommenced
6300000
CY2023Q4 us-gaap Derivative Notional Amount
DerivativeNotionalAmount
217800000
CY2023Q4 us-gaap Derivative Asset Notional Amount
DerivativeAssetNotionalAmount
18100000
CY2023Q4 us-gaap Derivative Liability Notional Amount
DerivativeLiabilityNotionalAmount
13600000
CY2022Q4 us-gaap Derivative Notional Amount
DerivativeNotionalAmount
1063000000
CY2022Q4 us-gaap Derivative Asset Notional Amount
DerivativeAssetNotionalAmount
128400000
CY2022Q4 us-gaap Derivative Liability Notional Amount
DerivativeLiabilityNotionalAmount
45500000
CY2021 us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax
101900000
CY2021 us-gaap Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net
DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
-3100000
CY2021 ajg Amount Of Gain Loss Recognized Effectiveness Testing
AmountOfGainLossRecognizedEffectivenessTesting
3000000
CY2022 us-gaap Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax
OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax
152500000
CY2022 us-gaap Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net
DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
3200000
CY2022 ajg Amount Of Gain Loss Recognized Effectiveness Testing
AmountOfGainLossRecognizedEffectivenessTesting
3200000
CY2023Q4 ajg Number Of Square Feet
NumberOfSquareFeet
360000
CY2023 ajg Number Of Employees
NumberOfEmployees
2000
CY2023 us-gaap Operating Lease Expense
OperatingLeaseExpense
183500000
CY2022 us-gaap Operating Lease Expense
OperatingLeaseExpense
176600000
CY2021 us-gaap Operating Lease Expense
OperatingLeaseExpense
153400000
CY2023 ajg Amount Of Commitment Expiration Off Balance Sheet Commitments Within Year One
AmountOfCommitmentExpirationOffBalanceSheetCommitmentsWithinYearOne
2000000
CY2023 ajg Amount Of Commitment Expiration Off Balance Sheet Commitments Within Year Two
AmountOfCommitmentExpirationOffBalanceSheetCommitmentsWithinYearTwo
200000
CY2023 ajg Amount Of Commitment Expiration Off Balance Sheet Commitments Within Year Three
AmountOfCommitmentExpirationOffBalanceSheetCommitmentsWithinYearThree
100000
CY2023 ajg Amount Of Commitment Expiration Off Balance Sheet Commitments Within Year Four
AmountOfCommitmentExpirationOffBalanceSheetCommitmentsWithinYearFour
100000
CY2023 ajg Amount Of Commitment Expiration Off Balance Sheet Commitments Within Year Thereafter
AmountOfCommitmentExpirationOffBalanceSheetCommitmentsWithinYearThereafter
21200000
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Ernst & Young LLP
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Chicago, Illinois
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