Impairments

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

We review long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. A provision is made for impairment if estimated future operating cash flows (undiscounted and without interest charges) plus estimated disposition proceeds (undiscounted) are less than the current book value of the property. Key factors that we utilize in this analysis include projected rental rates, estimated holding periods, historical sales and re-leases, capital expenditures and property sales capitalization rates. If a property is classified as held for sale, it is carried at the lower of carrying cost or estimated fair value, less estimated cost to sell, and depreciation of the property ceases.

The following table summarizes our provisions for impairment during the periods indicated below (dollars in millions):



	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Total provisions for impairment	$	13.5	$	6.9	$	31.2	$	25.0
Number of properties:
Classified as held for sale	9		—		9		—
Classified as held for investment	2		1		4		3
Sold	16		18		28		36