Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Net gain on disposition of assets

The following table presents the net gain on asset dispositions for the years ended December 31 (in millions):

	2024		2023		2022
Net disposition gains	$	122.0	$	119.8	$	104.1
Residual sharing income	0.5		0.9		5.6
Non-remarketing net disposition gains	15.8		11.1		17.1
Asset impairments (1)	—		(1.5)		(48.9)
Net gain on asset dispositions	$	138.3	$	130.3	$	77.9

__________

(1) See "Note 10. Asset Impairments and Assets Held for Sale" for further information about asset impairment losses.