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Virtus Acquisition (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended
	Jan. 02, 2020	Jan. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Business Acquisition
FIS paid redemption value			$ 0	$ 173
Virtus Acquisition
Business Acquisition
Percentage of equity interests acquired	70.00%
Call option exercise period	2 years
Put option exercise period	3 years
Virtus Acquisition | Virtus Partners
Business Acquisition
Percentage of equity interests acquired		100.00%
Ownership interest retained by founders	30.00%
FIS paid redemption value		$ 173

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