Leases (Tables)

12 Months Ended

Dec. 31, 2023

Leases [Abstract]

Schedule of Components of Lease Expense

The components of lease expense were as follows:

Year Ended December 31,		2023	2022		2021
Finance lease cost
Amortization of right-of-use assets and interest	$	1.1	$	.9	$	.6
Operating lease cost		17.5		15.5		16.3
Short-term lease cost		3.7		2.4		3.0
Variable lease cost		2.4		1.2		1.5
Total lease cost	$	24.7	$	20.0	$	21.4

Schedule of Balance Sheet Information Related to Leases

Balance sheet information related to leases was as follows:

	2023				2022
At December 31,	OPERATING LEASES		FINANCE LEASES		OPERATING LEASES		FINANCE LEASES
TRUCK, PARTS AND OTHER:
Other noncurrent assets	$	64.9	$	2.5	$	36.9	$	2.7
FINANCIAL SERVICES:
Other assets		6.0				6.0
Total right-of-use assets	$	70.9	$	2.5	$	42.9	$	2.7
TRUCK, PARTS AND OTHER:
Accounts payable, accrued expenses and other	$	14.2	$	.8	$	11.3	$	.8
Other liabilities		51.6		1.6		25.8		1.8
FINANCIAL SERVICES:
Accounts payable, accrued expenses and other		1.8				1.4
Deferred taxes and other liabilities		3.9				4.4
Total lease liabilities	$	71.5	$	2.4	$	42.9	$	2.6

Schedule of Weighted-Average Remaining Lease Term and Discount Rate

The weighted-average remaining lease term and discount rate were as follows at December 31:

	2023						2022
	OPERATING LEASES			FINANCE LEASES			OPERATING LEASES			FINANCE LEASES
Weighted-average remaining lease term	5.7 years			3.1 years			4.8 years			3.8 years
Weighted-average discount rate		4.0	%		2.3	%		1.6	%		1.7	%

Schedule of Maturities of Lease Liabilities

Maturities of lease liabilities are as follows:

Beginning January 1,	OPERATING LEASES			FINANCE LEASES
2024	$	17.8		$	1.0
2025		16.1			.7
2026		13.7			.6
2027		10.4			.1
2028		7.8			.1
Thereafter		14.6
Total lease payments		80.4			2.5
Less: interest		(8.9	)		(.1	)
Total lease liabilities	$	71.5		$	2.4

Schedule of Cash Flow Information Related to Leases

Cash flow information related to leases was as follows:

Year Ended December 31,		2023	2022		2021
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	17.0	$	15.9	$	16.7
Financing cash flows from finance leases		1.1		1.0		.6
Right-of-use assets obtained in exchange for lease liabilities
Operating leases		39.5		17.0		8.1
Finance leases		1.3		2.9		.4