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LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Tables)

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Long-Term Debt and Financing Arrangements

						September 30, 2023																					December 31, 2022
(Millions of Dollars)			Interest Rate			Notional Value			Unamortized Discount			Unamortized Gain/(Loss) Terminated Swaps 1			Purchase Accounting FV Adjustment			Deferred Financing Fees			Carrying Value						Carrying Value
Notes payable due 2025			2.30%			$	500.0		$	(0.3)		$	—		$	—		$	(1.2)		$	498.5					$	497.7
Notes payable due 2026			3.40%			500.0			(0.2)			—			—			(1.1)			498.7						498.3
Notes payable due 2026			6.27%			350.0			—			—			—			(1.5)			348.5						—
Notes payable due 2026			3.42%			25.0			—			—			1.1			—			26.1						26.4
Notes payable due 2026			1.84%			26.4			—			—			1.0			—			27.4						28.0
Notes payable due 2028			6.00%			400.0			(0.4)			—			—			(2.2)			397.4						—
Notes payable due 2028			7.05%			150.0			—			5.2			5.0			—			160.2						161.8
Notes payable due 2028			4.25%			500.0			(0.2)			—			—			(2.2)			497.6						497.2
Notes payable due 2028			3.52%			50.0			—			—			3.4			(0.1)			53.3						53.7
Notes payable due 2030			2.30%			750.0			(1.6)			—			—			(3.4)			745.0						744.5
Notes payable due 2032			3.00%			500.0			(0.8)			—			—			(3.0)			496.2						495.9
Notes payable due 2040			5.20%			400.0			(0.2)			(25.0)			—			(2.3)			372.5						371.3
Notes payable due 2048			4.85%			500.0			(0.5)			—			—			(4.6)			494.9						494.8
Notes payable due 2050			2.75%			750.0			(1.8)			—			—			(7.6)			740.6						740.3
Notes payable due 2060 (junior subordinated)			4.00%			750.0			—			—			—			(8.7)			741.3						741.2
Other, payable in varying amounts 2024 through 2027			4.10%-4.31%			2.1			—			—			—			—			2.1						3.0
Total Long-term debt, including current maturities						$	6,153.5		$	(6.0)		$	(19.8)		$	10.5		$	(37.9)		$	6,100.3					$	5,354.1
Less: Current maturities of long-term debt																					(1.1)						(1.2)
Long-term debt																					$	6,099.2					$	5,352.9

1Unamortized gain/(loss) associated with interest rate swaps are more fully discussed in Note H, Financial Instruments.

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Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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