Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2019

Depreciation and amortization is computed using the straight‑line method over the estimated useful lives of the assets, which are as follows:



Property and Equipment		Estimated Useful Life
Land		Indefinite
Buildings		30 years
Site improvements		5-15 years
Leased vehicles		3-10 years
Computer equipment		3-5 years
Furniture and fixtures		3-5 years
Dockless e-bikes		3 years
Internal-use software		2 years
Leased computer equipment		Shorter of estimated useful life or lease term
Leasehold improvements		Shorter of estimated useful life or lease term

The components of property and equipment, net as of December 31, 2018 and 2019 were as follows (in millions):



	As of December 31,
	2018			2019
Land	$	67		$	76
Building and site improvements	93			40
Leasehold improvements	315			382
Computer equipment	858			927
Leased computer equipment	288			539
Leased vehicles	34			24
Internal-use software	51			127
Furniture and fixtures	39			49
Dockless e-bikes	10			78
Construction in progress	832			863
Total	2,587			3,105
Less: Accumulated depreciation and amortization	(946		)	(1,374		)
Property and equipment, net	$	1,641		$	1,731