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Investment in Real Estate (Tables)
 3 Months Ended
Mar. 31, 2020
Real Estate [Abstract]  
Schedule of Major Components of Real Estate Investments and Intangibles
As of March 31, 2020 and December 31, 2019, major components of our real estate investments and intangibles and related accumulated depreciation and amortization are as follows (in millions):
As of:
March 31, 2020
 
December 31, 2019
 
Cost
Accumulated Depreciation and Amortization
Net book value
 
Cost
Accumulated Depreciation and Amortization
Net book value
Investment in real estate
 
 
 
 






   Building and improvements
$
1,786.3

$
(567.1
)
$
1,219.2

 
$
1,761.4

$
(545.1
)
$
1,216.3

   Equipment
3,106.4

(902.4
)
2,204.0

 
3,028.2

(834.1
)
2,194.1

 
 
 
 
 
 
 
 
Intangible assets
 
 
 
 
 
 
 
   Customer relationships
$
247.1

$
(154.1
)
$
93.0

 
$
247.1

$
(151.1
)
$
96.0

   In-place leases
134.2

(51.9
)
82.3

 
137.1

(46.7
)
90.4

   Other contractual
19.2

(10.0
)
9.2

 
19.4

(9.7
)
9.7

      Total intangible assets
$
400.5

$
(216.0
)
$
184.5

 
$
403.6

$
(207.5
)
$
196.1
Schedule Of Useful Lives
Depreciation and amortization are calculated using the straight-line method over the useful lives of the assets. The typical life of owned assets are as follows:
Buildings
30 years
Building improvements
30 years
Equipment
20 years