Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Organization Consolidation And Presentation Of Financial Statements [Abstract]

As such, the Company has determined it has one reporting segment and the composition of our revenue is summarized below with LTL shipments defined as shipments less than 10,000 pounds that move in our network.

Consolidated (in millions)	2020		2019		2018
LTL revenue	$	4,093.3	$	4,494.0	$	4,690.6
Other revenue		420.4		377.2		401.4
Total revenue	$	4,513.7	$	4,871.2	$	5,092.0

Schedule of Undiscounted Amounts and Material Changes in Insurance Claims

Expected aggregate undiscounted amounts and material changes to these amounts related to workers’ compensation and property damage and liability claims, or third-party liability claims, as of December 31 are presented below:

(in millions)	Workers’ Compensation			Third-Party Liability Claims			Total
Undiscounted settlement cost estimate at December 31, 2018	$	287.8		$	73.6		$	361.4
Estimated settlement cost for 2019 claims		103.3			35.2			138.5
Claim payments, net of recoveries		(95.9	)		(36.1	)		(132.0	)
Change in estimated settlement cost for prior claim years		(9.6	)		1.1			(8.5	)
Undiscounted settlement cost estimate at December 31, 2019	$	285.6		$	73.8		$	359.4
Estimated settlement cost for 2020 claims		95.0			36.4			131.4
Claim payments, net of recoveries		(88.1	)		(53.6	)		(141.7	)
Change in estimated settlement cost for prior claim years		(17.3	)		13.4			(3.9	)
Undiscounted settlement cost estimate at December 31, 2020	$	275.2		$	70.0		$	345.2
Discounted settlement cost estimate at December 31, 2020	$	254.9		$	68.4		$	323.3

Schedule of Estimated Cash Payments to Settle Claims

Estimated cash payments to settle claims which were incurred on or before December 31, 2020, for the next five years and thereafter are as follows:

(in millions)	Workers’ Compensation		Third-Party Liability Claims		Total
2021	$	78.1	$	24.9	$	103.0
2022		47.4		19.9		67.3
2023		31.3		12.3		43.6
2024		20.6		6.9		27.5
2025		14.9		3.0		17.9
Thereafter		82.9		3.0		85.9
Total	$	275.2	$	70.0	$	345.2

Summary of Components of Property and Equipment

The following is a summary of the components of our property and equipment at cost at December 31:

(in millions)	2020		2019
Land	$	235.7	$	239.9
Structures		780.3		788.4
Revenue equipment		1,236.8		1,228.2
Technology equipment and software		321.5		291.7
Other, including miscellaneous field operations equipment		221.2		213.4
Total property and equipment, at cost	$	2,795.5	$	2,761.6

Schedule of Service Lives for Property and Equipment

We carry property and equipment at cost less accumulated depreciation. We compute depreciation using the straight-line method based on the following service lives:

		Years
Structures		10 - 30
Revenue equipment		10 - 20
Technology equipment and software		3 - 7
Other		3 - 10