Goodwill and Intangible Assets - Goodwill (Details) $ in Millions	6 Months Ended
Jun. 30, 2021 USD ($)
Goodwill [Roll Forward]
Goodwill	$ 6,109
Acquisitions	151
Measurement period adjustment	183
Foreign currency translation adjustment	5
Goodwill	6,448
Mobility
Goodwill [Roll Forward]
Goodwill	2,562
Acquisitions	98
Measurement period adjustment	0
Foreign currency translation adjustment	6
Goodwill	2,666
Delivery
Goodwill [Roll Forward]
Goodwill	3,547
Acquisitions	53
Measurement period adjustment	183
Foreign currency translation adjustment	(1)
Goodwill	3,782
Freight
Goodwill [Roll Forward]
Goodwill	0
Acquisitions	0
Measurement period adjustment	0
Foreign currency translation adjustment	0
Goodwill	$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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