FAIR VALUE MEASUREMENTS - FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Financial instruments
Preferred stock	$ 30.4	$ 30.4
Carrying amount
Financial instruments
Preferred stock	30.4	30.4
Long-term debt, including current portion	5,902.8	4,525.3
Fair value
Financial instruments
Preferred stock	21.1	21.2
Long-term debt, including current portion	$ 5,448.0	$ 4,434.6

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details

- Definition

Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.

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+ Details