Leases (Tables)

12 Months Ended

Dec. 31, 2023

Leases [Abstract]

Schedule of Components of ROU Assets and Lease Liabilities

The components of ROU assets and lease liabilities and the classification within the Consolidated Balance Sheets as of December 31, 2023 and 2022 were as follows:

(millions)	Classification	2023		2022
Assets
Operating	Right-of-use assets	$	179.4	$	166.9
Finance	Property and equipment, net		24.6		24.4
Total leased assets		$	204.0	$	191.3
Liabilities
Current
Operating	Short-term lease liabilities	$	56.2	$	60.2
Finance	Current portion of long-term borrowings		7.5		7.2
Noncurrent
Operating	Long-term lease liabilities		158.0		158.5
Finance	Long-term borrowings, excluding current portion		16.6		16.0
Total lease liabilities		$	238.3	$	241.9

Schedule of Components of Lease Cost

The components of lease cost and classification within the Consolidated Statements of Income during the years ended December 31, 2023, 2022 and 2021 were as follows:

(millions)	Classification	2023		2022		2021
Operating lease (a)(b)	Cost of services - lease type contracts	$	60.6	$	61.6	$	57.5
Short-term lease (a)	Cost of services - lease type contracts		19.9		19.4		15.9
Variable lease	Cost of services - lease type contracts		84.7		72.1		36.7
Operating lease cost			165.2		153.1		110.1
Finance lease cost
Amortization of leased assets	Depreciation and amortization		6.7		5.9		5.7
Interest on lease liabilities	Interest expense		1.3		1.0		1.0
Lease Impairment	Lease impairment		—		3.7		3.6
Net lease cost		$	173.2	$	163.7	$	120.4

(a)Included expense related to leases for office space recorded in General and administrative expenses within the Consolidated Statements of Income of $3.8 million, $4.0 million and $4.1 million during the years ended December 31, 2023, 2022 and 2021, respectively.

(b)Included rent concessions of $4.1 million, $6.2 million and $16.6 million during the years ended December 31, 2023, 2022 and 2021, respectively.

Schedule of Maturities of Lease Liabilities

Maturities, lease term and discount rate information of lease liabilities as of December 31, 2023 were as follows:

	Operating			Finance
(millions)	Leases			Leases			Total
2024	$	66.1		$	8.7		$	74.8
2025		53.7			6.5			60.2
2026		41.6			5.2			46.8
2027		27.8			3.1			30.9
2028		21.7			1.7			23.4
After 2028		36.0			2.0			38.0
Total lease payments		246.9			27.2			274.1
Less: Imputed interest		32.7			3.1			35.8
Present value of lease liabilities	$	214.2		$	24.1		$	238.3
Weighted-average remaining lease term (years)		5.1			4.0
Weighted-average discount rate		5.6	%		5.9	%

Schedule of Supplemental Cash Flow Information Related to Leases

Supplemental cash flow information related to leases during the years ended December 31, 2023, 2022 and 2021 were as follows:

(millions)	2023		2022		2021
Cash paid for amounts included in the measurement of lease liabilities
Operating cash outflows related to operating leases	$	88.7	$	91.5	$	96.4
Operating cash outflows related to interest on finance leases		1.3		1.0		1.0
Financing cash outflows related to finance leases		7.8		9.6		7.7
Leased assets obtained in exchange for new operating lease liabilities		69.4		22.2		40.7
Leased assets obtained in exchange for new finance lease liabilities		9.0		10.1		0.4