Significant Accounting Policies Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Net Gains (Losses) on Sale and Disposal of Property [Table Text Block]

The amount of gains and losses for the years ended December 31 were as follows:

(in millions)	2022		2021		2020
Gains on the sale of property	$	3.5	$	1.4	$	0.7
Losses on the sale and disposal of property	(1.2)		(0.9)		(0.5)
Net gains on sale and disposal of property	$	2.3	$	0.5	$	0.2