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PROPERTY, EQUIPMENT AND SOFTWARE, NET
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
PROPERTY, EQUIPMENT AND SOFTWARE, NET PROPERTY, EQUIPMENT AND SOFTWARE, NET
Property, equipment and software, net, consists of the following:
(in millions)December 31, 2021December 31, 2020
Software$236 $204 
Office equipment, including data processing equipment31 28 
Leasehold improvements25 24 
Furniture, fixtures, and equipment17 16 
Projects in progress1 
Total310 273 
Less: Accumulated depreciation(231)(194)
Property and equipment, net$79 $79 
Projects in progress consist primarily of development costs for internally developed software, which we capitalize and amortize on a straight-line basis over the estimated useful life.
The following table summarizes our depreciation expense and capitalized internally developed software costs and related depreciation expense.
 Year Ended December 31,
(in millions)202120202019
Depreciation expense$42 $42 $41 
Capitalized internally developed software costs33 36 31 
Depreciation expense for capitalized internally developed software costs33 31 29