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Stock-based Compensation - Employee Stock purchase Plan (Details) shares in Millions	12 Months Ended	161 Months Ended
	Mar. 31, 2024 shares	Mar. 31, 2024 shares
Equity Incentive Plan Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount for shares repurchased (as a percent)	5.00%
Shares authorized to be repurchased (in shares)	10.0	10.0
Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, shares, employee stock purchase plans (in shares)	0.2	3.7

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