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Goodwill (Details) - USD ($) $ in Millions		12 Months Ended
	Feb. 18, 2020	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 36,038	$ 5,702
Acquisitions and valuation adjustments		394	30,482
Dispositions			(2)
Goodwill reclassified to assets held for sale			(220)
Foreign currency translation		(110)	76
Goodwill, ending balance		36,322	36,038
Goodwill reclassified to assets held for sale			220
Investment Services Business
Goodwill [Roll Forward]
Goodwill reclassified to assets held for sale			(220)
Controlling interest sold (as a percent)	60.00%
Goodwill reclassified to assets held for sale			220
Operating segments | Acceptance
Goodwill [Roll Forward]
Goodwill, beginning balance		21,189	0
Acquisitions and valuation adjustments		332	21,178
Dispositions			0
Goodwill reclassified to assets held for sale			0
Foreign currency translation		(113)	11
Goodwill, ending balance		21,408	21,189
Goodwill reclassified to assets held for sale			0
Operating segments | Fintech
Goodwill [Roll Forward]
Goodwill, beginning balance		2,104	2,102
Acquisitions and valuation adjustments		0	2
Dispositions			(2)
Goodwill reclassified to assets held for sale			0
Foreign currency translation		4	2
Goodwill, ending balance		2,108	2,104
Goodwill reclassified to assets held for sale			0
Operating segments | Payments
Goodwill [Roll Forward]
Goodwill, beginning balance		12,745	3,380
Acquisitions and valuation adjustments		62	9,302
Dispositions			0
Goodwill reclassified to assets held for sale			0
Foreign currency translation		(1)	63
Goodwill, ending balance		12,806	12,745
Goodwill reclassified to assets held for sale			0
Corporate and Other
Goodwill [Roll Forward]
Goodwill, beginning balance		0	220
Acquisitions and valuation adjustments		0	0
Dispositions			0
Goodwill reclassified to assets held for sale			(220)
Foreign currency translation		0	0
Goodwill, ending balance		$ 0	0
Goodwill reclassified to assets held for sale			$ 220

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- Definition

Goodwill, Acquired During Period And Purchase Accounting Adjustments

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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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 transfers into (out 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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Amount of divestiture 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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