Derivatives and Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2023

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]

Recorded Amounts and Estimated Fair Values of Long-term Debt and Derivative Financial Instruments

The recorded amounts and estimated fair values of total debt, excluding unamortized issuance costs and discounts, at December 31 were as follows:

	2023				2022
In millions	Recorded Amount		Fair Value		Recorded Amount		Fair Value
Variable rate debt	$	1,187.5	$	1,187.5	$	1,520.0	$	1,520.0
Fixed rate debt	819.3		824.5		819.3		789.3
Total debt	$	2,006.8	$	2,012.0	$	2,339.3	$	2,309.3

Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

Financial assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows:

	December 31, 2023
In millions	Level 1		Level 2		Level 3		NAV		Total
Recurring fair value measurements
Interest rate contract assets	$	—	$	0.3	$	—	$	—	$	0.3
Foreign currency contract assets	—		0.2		—		—		0.2
Foreign currency contract liabilities	—		(70.0)		—		—		(70.0)
Deferred compensation plan assets	12.1		—		—		14.0		26.1
Total recurring fair value measurements	$	12.1	$	(69.5)	$	—	$	14.0	$	(43.4)

	December 31, 2022
In millions	Level 1		Level 2		Level 3		NAV		Total
Recurring fair value measurements
Foreign currency contract liabilities	$	—	$	(52.2)	$	—	$	—	$	(52.2)
Deferred compensation plan assets	10.5		—		—		11.2		21.7
Total recurring fair value measurements	$	10.5	$	(52.2)	$	—	$	11.2	$	(30.5)