DEBT - Senior Notes (Details) - Senior Notes - USD ($) $ in Millions	Aug. 13, 2021	Mar. 17, 2021	Oct. 22, 2019	Sep. 30, 2025	Sep. 30, 2024	Dec. 15, 2016
Debt Instrument [Line Items]
Debt Instrument, Covenant, Interest Coverage Ratio, Minimum				2.00
Debt Instrument, Covenant, Interest Coverage Ratio				4.78
Senior Notes due 2026 – 5.250%
Debt Instrument [Line Items]
Interest rate (percent)				5.25%	5.25%	5.25%
Face amount of debt						$ 250.0
Senior Notes due 2029 - 4.500%
Debt Instrument [Line Items]
Proceed from issuance of unsecured debt			$ 450.0
Interest rate (percent)			4.50%	4.50%	4.50%
Senior Notes due 2031 – 4.000%
Debt Instrument [Line Items]
Proceed from issuance of unsecured debt		$ 500.0
Interest rate (percent)		4.00%		4.00%	4.00%
Senior Notes due 2032 – 4.375%
Debt Instrument [Line Items]
Proceed from issuance of unsecured debt	$ 400.0
Interest rate (percent)	4.375%			4.375%	4.375%