Legal and Regulatory Proceedings (Details) $ in Millions						1 Months Ended	3 Months Ended	12 Months Ended
	Sep. 29, 2023 USD ($)	Sep. 14, 2023 USD ($)	Mar. 29, 2023 USD ($)	May 28, 2019 USD ($)	Sep. 17, 2018 USD ($)	Oct. 31, 2012 merchant	Mar. 31, 2023 lawsuit	Dec. 31, 2013 lawsuit	Sep. 30, 2023 USD ($)	Aug. 03, 2012
Loss Contingencies
Apr percentage allegedly misleading										120.00%
Number of putative class actions filed | lawsuit								4
Damages sought				$ 440.0
Damages awarded			$ 2.0
Litigation settlement	$ 8.0
Amount in excess of amounts reserved									$ 96.0
Shareholder Derivative Lawsuit
Loss Contingencies
Litigation settlement		$ 5.5
Number of claims | lawsuit							5
Federal Lawsuits
Loss Contingencies
Number of merchants requesting exclusion | merchant						500
Class Action Settlement
Loss Contingencies
Total payment by all defendants					$ 6,240.0
Amount awarded to other party, escrow					5,340.0
Amount awarded to other party, additional					900.0
Escrow funds returned to defendants					$ 700.0