Supplemental Financial Statement Information (Property and Equipment) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross		$ 82,507
Property and equipment, gross	$ 104,207
Less: accumulated depreciation		(22,788)
Less: accumulated depreciation	(30,561)
Property and equipment, net		59,719
Property and equipment, net	73,646
Land and buildings
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross		30,179
Property and equipment, gross	39,865
Information technology assets
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross		30,119
Property and equipment, gross	36,840
Construction in progress
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	21,036	16,838
Leasehold improvements
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	6,310	5,310
Furniture and fixtures
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	156	61
Information technology assets and land and buildings held under finance leases
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross		$ 648
Property and equipment, gross	$ 1,600

Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization

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- Definition

Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization

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Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization

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- Definition

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

+ References

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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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