U.S. and Europe Retrospective Responsibility Plan - Additional Details (Details) € in Millions, $ in Millions		3 Months Ended
Dec. 27, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Retrospective Responsibility Plan [Abstract]
Return of takedown payment to the litigation escrow account \| $	$ 467		$ 467	$ 0
VE covered loss, maximum amount of loss to allow adjustment of conversion rate during six-month period \| €		€ 20

VE Covered Loss, Protection from the Plan Relating to Liabilities where the Claim Relates to Inter-regional Multilateral Interchange Fee Rates

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration