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Schedule VI - Supplemental Information Concerning Property-Casualty Insurance Operations
 12 Months Ended
Dec. 31, 2020
Schedule VI - Supplemental Information Concerning Property-Casualty Insurance Operations [Abstract]  
Schedule VI - Supplemental Information Concerning Property-Casualty Insurance Operations
OLD REPUBLIC INTERNATIONAL CORPORATION AND SUBSIDIARIES
SCHEDULE VI - SUPPLEMENTAL INFORMATION CONCERNING
PROPERTY-CASUALTY INSURANCE OPERATIONS
For the years ended December 31, 2020, 2019 and 2018
($ in Millions)
Column AColumn BColumn CColumn DColumn E
Affiliation With Registrant (1)Deferred
Policy
Acquisition
Costs		Reserves
for Unpaid
Claims
and Claim
Adjustment
Expenses (2)		Discount,
If Any,
Deducted in
Column C		Unearned
Premiums (2)
Year Ended December 31:
2020$327.2 $6,328.0 $196.9 $1,765.2 
2019324.0 6,021.3 209.6 1,733.0 
2018314.1 5,756.0 216.5 1,696.4 
Column AColumn FColumn GColumn H
Net
Investment
Income		Claims and Claim
Adjustment Expenses
Incurred Related to
Affiliation With Registrant (1)Earned
Premiums		Current
Year		Prior
Years
Year Ended December 31:
2020$3,394.2 $352.2 $2,380.5 $(27.4)
20193,433.3 356.7 2,424.1 12.4 
20183,278.6 341.9 2,350.2 (6.4)
Column AColumn IColumn JColumn K
Affiliation With Registrant (1)Amortization
of Deferred
Policy
Acquisition
Costs		Paid
Claims
and Claim
Adjustment
Expenses		Premiums
Written
Year Ended December 31:
2020$500.9 $2,046.3 $3,431.3 
2019531.5 2,171.3 3,469.3 
2018488.4 2,083.0 3,382.0 
__________

(1)    Includes consolidated property-casualty entities. The amounts relating to the Company's unconsolidated property-casualty subsidiaries and the proportionate share of the registrant's and its subsidiaries' 50%-or-less owned property-casualty equity investees are immaterial and have, therefore, been omitted from this schedule.
(2)    See note (2) to Schedule III.