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Property, Equipment, and Capitalized Software, Net - Summary of Property, Equipment, and Capitalized Software (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Total cost | $ 687 | $ 774
Less: accumulated amortization - capitalized software | (351) | (320)
Less: accumulated depreciation and amortization - furniture, equipment, building, and improvements | (179) | (213)
Total accumulated depreciation and amortization | (530) | (533)
ROU assets - finance leases | 228 |
Property, equipment, and capitalized software, net | 385 |
Property, equipment, and capitalized software, net |  | 241
Capitalized software |  |
Property, Plant and Equipment [Line Items] |  |
Total cost | 421 | 373
Furniture and equipment |  |
Property, Plant and Equipment [Line Items] |  |
Total cost | 213 | 231
Building and improvements |  |
Property, Plant and Equipment [Line Items] |  |
Total cost | 49 | 154
Land |  |
Property, Plant and Equipment [Line Items] |  |
Total cost | $ 4 | $ 16

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