Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Lease, Cost

Operating lease information is as follows:

	Year Ended December 31
	2021			2020			2019
	(in millions of dollars)
Lease Cost
Operating Lease Cost	$	35.2		$	48.6		$	29.4
Sublease Income	(1.0)			(1.3)			(1.9)
Total Lease Cost	$	34.2		$	47.3		$	27.5
Other Information
Cash Paid for Amounts Included in the Measurement of Lease Liabilities	$	29.9		$	30.8		$	28.9
Weighted-Average Remaining Lease Term	6 years			6 years			7 years
Weighted-Average Discount Rate	4.45		%	4.37		%	4.60		%

Lessee, Operating Lease, Liability, Maturity

As of December 31, 2021, aggregate undiscounted minimum lease payments and the reconciliation to our lease liability are as follows (in millions of dollars):

2022	$	22.6
2023	16.5
2024	12.7
2025	9.9
2026	8.5
2027 and Thereafter	25.9
Total	96.1
Less Imputed Interest	13.5
Lease Liability	$	82.6