XML 99 R82.htm IDEA: XBRL DOCUMENT v3.21.2
DEBT - Senior Notes - 4.500% (Details) - Senior Notes - Senior Notes - 4.500% - USD ($)
$ in Millions
Oct. 22, 2019
Sep. 30, 2021
Sep. 30, 2020
Debt Instrument [Line Items]      
Proceed from issuance of unsecured debt $ 450.0    
Interest rate (percent) 4.50% 4.50% 4.50%