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Property, Equipment, Land and Leasehold Improvements
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Property, Equipment, Land and Leasehold Improvements Property, Equipment, Land and Leasehold Improvements
Property, equipment, land and leasehold improvements at December 31, 2019 and 2018 consist of the following ($ in millions):
 
As of December 31,
2019
 
2018
Land
$
319

 
$
319

Buildings
40

 
40

Leasehold and land improvements
813

 
770

Machinery and equipment
2,951

 
2,783

Furniture and fixtures
52

 
45

Construction in progress
143

 
113

 
4,318

 
4,070

Less: accumulated depreciation
(1,116
)
 
(929
)
Property, equipment, land and leasehold improvements, net
$
3,202

 
$
3,141