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Premises and Equipment (Notes)
 12 Months Ended
Dec. 31, 2019
Premises and Equipments [Abstract]  
Premises and Equipment PREMISES AND EQUIPMENT
A summary of premises and equipment by major category follows:
(in millions)
 
 
 
December 31
2019
 
2018
Land
$
86

 
$
85

Buildings and improvements
818

 
842

Furniture and equipment
513

 
492

Total cost
1,417

 
1,419

Less: Accumulated depreciation and amortization
(960
)
 
(944
)
Net book value
$
457

 
$
475


The Corporation conducts a portion of its business from leased facilities and leases certain equipment. Rental expense for leased properties and equipment amounted to $81 million, $75 million and $78 million in 2019, 2018 and 2017, respectively. Refer to Note 26 for more information on leased facilities and equipment.