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Property, Plant, and Capitalized Software (Notes)
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment Disclosure [Text Block] Property, Equipment and Capitalized Software
A summary of property, equipment and capitalized software is as follows:
(in millions)December 31, 2021December 31, 2020
Land and improvements$502 $533 
Buildings and improvements4,882 4,759 
Computer equipment1,851 1,767 
Furniture and fixtures2,014 1,787 
Less accumulated depreciation(3,857)(3,364)
Property and equipment, net5,392 5,482 
Capitalized software5,712 5,010 
Less accumulated amortization(2,135)(1,866)
Capitalized software, net3,577 3,144 
Total property, equipment and capitalized software, net$8,969 $8,626 
 Depreciation expense for property and equipment for the years ended December 31, 2021, 2020 and 2019 was $996 million, $997 million and $995 million, respectively. Amortization expense for capitalized software for the years ended December 31, 2021, 2020 and 2019 was $923 million, $814 million and $721 million, respectively.