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SCHEDULE III - SUPPLEMENTARY INSURANCE INFORMATION
 12 Months Ended
Dec. 31, 2018
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]  
SCHEDULE III - SUPPLEMENTARY INSURANCE INFORMATION
STATE AUTO FINANCIAL CORPORATION AND SUBSIDIARIES
SCHEDULE III – SUPPLEMENTARY INSURANCE INFORMATION
Years Ended December 31, 2018, 2017 and 2016 

($ millions)
 
 
Segment
Deferred
policy
acquisition
cost
Future
benefits,
claims and
losses(1)
Unearned
premiums
Other policy
claims and
benefits
payable
Premium
revenue
Year ended December 31, 2018: 
Personal insurance segment$59.0 $240.5 $340.9 $— $673.9 
Commercial insurance segment41.6 581.9 230.7 — 464.3 
Specialty insurance segment1.3 318.9 6.0 — 99.8 
Investment operations segment— — — — — 
Total$101.9 $1,141.3 $577.6 $— $1,238.0 
Year ended December 31, 2017: 
Personal insurance segment$49.8 $256.1 $288.1 $— $580.6 
Commercial insurance segment41.5 604.3 225.6 — 455.7 
Specialty insurance segment19.0 392.1 91.7 — 239.8 
Investment operations segment— — — — — 
Total$110.3 $1,252.5 $605.4 $— $1,276.1 
Year ended December 31, 2016: 
Personal insurance segment$46.3 $254.5 $258.7 $— $578.2 
Commercial insurance segment36.9 602.5 227.9 — 472.6 
Specialty insurance segment38.6 321.0 124.8 — 240.3 
Investment operations segment— — — — — 
Total$121.8 $1,178.0 $611.4 $— $1,291.1 
Segment
Net
investment
income
Benefits,
losses and
settlement
expenses(2)
Amort.
of deferred
policy
acquisition
costs
Other
operating
expenses
Premiums
written
Year ended December 31, 2018: 
Personal insurance segment$— $442.3 $114.7 $116.3 $726.5 
Commercial insurance segment— 275.2 84.1 115.7 469.8 
Specialty insurance segment— 80.6 21.2 (2.2)14.0 
Investment operations segment84.9 — — — — 
Total$84.9 $798.1 $220.0 $229.8 $1,210.3 
Year ended December 31, 2017: 
Personal insurance segment$— $416.3 $100.5 $90.6 $610.0 
Commercial insurance segment— 284.2 78.8 107.1 453.6 
Specialty insurance segment— 219.3 63.0 (21.4)206.7 
Investment operations segment78.8 — — — — 
Total$78.8 $919.8 $242.3 $176.3 $1,270.3 
Year ended December 31, 2016: 
Personal insurance segment$— $422.0 $100.0 $65.8 $576.9 
Commercial insurance segment— 331.5 91.0 80.8 459.4 
Specialty insurance segment— 190.6 76.9 15.5 256.2 
Investment operations segment74.7 — — — — 
Total$74.7 $944.1 $267.9 $162.1 $1,292.5 
(1)
Segmented balances are net of reinsurance recoverable on losses and loss expenses payable.
(2)
Benefits, losses and settlement expenses are monitored on a statutory basis.