Subsequent Events (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020
Subsequent Event [Line Items]
Visa Class B shares, remaining shares		95,043
Subsequent Event [Member]
Subsequent Event [Line Items]
Visa Class B shares, shares sold	17,360
Visa Class B shares, gain on sale	$ 3.0
Visa Class B shares, remaining shares	77,683
Visa Class B shares, Fair Value of remaining shares	$ 13.4
Visa Class B shares, total gain including sale and write up	$ 16.4