Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment	$ 4,758	$ 4,190
Less: accumulated depreciation and amortization	(2,054)	(1,585)
Total property and equipment, net	2,704	2,605
Net book value of capitalized internally-developed software included in property and equipment, net	333	263
Land
Property, Plant and Equipment [Line Items]
Property and equipment	334	356
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	648	555
Vehicles, tractors, trailers and tankers
Property, Plant and Equipment [Line Items]
Property and equipment	1,726	1,561
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	949	809
Computer software and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	$ 1,101	$ 909

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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