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Provisions for Impairments
6 Months Ended
Jun. 30, 2021
Property, Plant and Equipment [Abstract]  
Provisions for Impairments Provisions for ImpairmentWe review long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. 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, a fair value analysis is performed and, to the extent the estimated fair value is less than the current book value, a provision for impairment is recorded to reduce the book value to estimated fair value. Key assumptions that
we utilize in this analysis include projected rental rates, estimated holding periods, 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. There were 33 properties classified as held for sale at June 30, 2021. If a property was previously reclassified as held for sale but the applicable criteria for this classification are no longer met, the property is reclassified to real estate held for investment. A property that is reclassified to held for investment is measured and recorded at the lower (i) its carrying amount before the property was classified as held for sale, adjusted for any depreciation expense that would have been recognized had the property been continuously classified as held for investment, or (ii) the fair value at the date of the subsequent decision not to sell.
The following table summarizes our provisions for impairment during the periods indicated below (dollars in millions):
Three months ended June 30,Six months ended June 30,
2021202020212020
Total provisions for impairment$17.2 $13.9 $20.0 $18.3 
Number of properties:
Classified as held for sale14 14 
Classified as held for investment
Sold18 17 28 28