XML 105 R77.htm IDEA: XBRL DOCUMENT v3.23.3
RETIREMENT PLANS - Fair Value of The Company's Pension Plan Asset (Details) - Defined Benefit Pension Plan - USD ($)
$ in Millions
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
International Plan      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 124.8 $ 128.9 $ 221.6
International Plan | Fair Value, Inputs, Level 1 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 118.3 39.8  
International Plan | Fair value, inputs, level 1 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 14.0 1.7  
International Plan | Fair value, inputs, level 3 | Insurance contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 104.3 38.1  
International Plan | Total common collective trusts measured at net asset value | Common collective trusts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 6.5 89.1  
International Plan | Total common collective trusts measured at net asset value | Common collective trusts | Common collective trusts—real estate      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
International Plan | Total common collective trusts measured at net asset value | Common collective trusts | Common collective trusts—equities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 32.6  
International Plan | Total common collective trusts measured at net asset value | Common collective trusts | Common collective trusts—fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 6.5 56.5  
U.S. Plan      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 54.1 59.1 $ 81.7
U.S. Plan | Fair Value, Inputs, Level 1 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2.2 2.1  
U.S. Plan | Fair value, inputs, level 1 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2.2 2.1  
U.S. Plan | Fair value, inputs, level 3 | Insurance contracts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
U.S. Plan | Total common collective trusts measured at net asset value | Common collective trusts      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 51.9 57.0  
U.S. Plan | Total common collective trusts measured at net asset value | Common collective trusts | Common collective trusts—real estate      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 1.8 2.8  
U.S. Plan | Total common collective trusts measured at net asset value | Common collective trusts | Common collective trusts—equities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 10.0 10.0  
U.S. Plan | Total common collective trusts measured at net asset value | Common collective trusts | Common collective trusts—fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 40.1 $ 44.2