Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lease, Cost

Operating lease information is as follows:

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

Operating lease cost as calculated prior to the adoption of ASC 842 was $29.2 million for the year ended December 31, 2018.

Lessee, Operating Lease, Liability, Maturity

As of December 31, 2020, aggregate undiscounted minimum net lease payments and the reconciliation to our lease liability are as follows (in millions of dollars):

2021	$	25.4
2022	22.8
2023	16.5
2024	12.7
2025	9.8
2026 and Thereafter	34.4
Total	121.6
Less Imputed Interest	15.7
Lease Liability	$	105.9