Ryan Specialty Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Reconciliation of Beginning and Ending Balances for the Level 3 (Detail) - Fair Value, Recurring [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Opening balance	$ 52,519	$ 24,418
Total gains/losses included in earnings	23,324	1,619
Settlements	(2,673)	(497)
Ending balance	73,170	25,540
Make-Whole provision on class B units [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Opening balance	30,423	891
Total gains/losses included in earnings	20,612
Settlements
Ending balance	51,035	891
Contingent consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Opening balance	22,096	23,527
Total gains/losses included in earnings	2,712	1,619
Settlements	(2,673)	(497)
Ending balance	$ 22,135	$ 24,649