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SCHEDULE IV - Reinsurance
 12 Months Ended
Dec. 31, 2017
Text Block [Abstract]  
SCHEDULE IV - Reinsurance
SCHEDULE IV — REINSURANCE
THE PROGRESSIVE CORPORATION AND SUBSIDIARIES
(millions)
 
Year Ended:
Gross Amount
 
Ceded to
Other Companies
 
Assumed
From
Other Companies
 
Net Amount
 
Percentage
of Amount
Assumed to Net
December 31, 2017
 
 
 
 
 
 
 
 
 
Premiums earned:
 
 
 
 
 
 
 
 
 
Property and liability insurance
$
26,425.7

 
$
695.8

 
$
0

 
$
25,729.9

 
0
%
December 31, 2016
 
 
 
 
 
 
 
 
 
Premiums earned:
 
 
 
 
 
 
 
 
 
Property and liability insurance
$
23,111.2

 
$
637.2

 
$
0

 
$
22,474.0

 
0
%
December 31, 2015
 
 
 
 
 
 
 
 
 
Premiums earned:
 
 
 
 
 
 
 
 
 
Property and liability insurance
$
20,454.1

 
$
555.0

 
$
0

 
$
19,899.1

 
0
%