Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Personal Injury Liability Activity

The personal injury liability activity was as follows (in millions):

	2020		2019
Balance at beginning of year	$	20.9	$	19.6
Accruals	6.3		6.3
Changes in estimate	9.4		0.2
Payments	(5.3)		(5.2)
Balance at end of year	$	31.3	$	20.9