Net Income Attributable to Shareholders of Crawford & Company per Common Share - Schedule of Shares Issued and Included in Weighted-average Common Shares used to Compute Basic and Diluted Earnings per Share (Details) - Class A Non-Voting - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
CRD-A Issued under the Non-Employee Director Stock Plan
Share-based Compensation Arrangement
Shares issued repurchased activity	0	0	62	134
CRD-A Issued under the U.K. ShareSave Scheme
Share-based Compensation Arrangement
Shares issued repurchased activity	15	17	139	69
CRD-A issued under the Employee Stock Purchase Plan
Share-based Compensation Arrangement
Shares issued repurchased activity	132	154	164	181