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SCHEDULE II - Condensed Financial Information Of Registrant Condensed Statements Of Comprehensive Income (Parent Company) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenues |  |  |  |
Total revenues |  | $ 26,839.0 | $ 23,441.4 | $ 20,853.8
Expenses |  |  |  |
Interest expense |  | 153.1 | 140.9 | 136.0
Total expenses |  | 24,700.1 | 21,970.7 | 18,942.2
Income before income taxes |  | 2,138.9 | 1,470.7 | 1,911.6
Benefit for income taxes |  | 540.8 | 413.5 | 611.1
Net income attributable to Progressive |  | 1,592.2 | 1,031.0 | 1,267.6
Comprehensive income attributable to Progressive |  | 1,941.0 | 1,164.0 | 1,044.9
Parent Company |  |  |  |
Revenues |  |  |  |
Dividends from subsidiaries |  | 867.3 | 375.5 | 852.5
Undistributed income (loss) from subsidiaries |  | 866.3 | 741.9 | 500.0
Equity in net income of subsidiaries | [1] | 1,733.6 | 1,117.4 | 1,352.5
Intercompany investment income | [1] | 11.3 | 5.5 | 3.9
Gains (losses) on extinguishment of debt |  | 0.2 | 1.6 | (0.9)
Total revenues |  | 1,745.1 | 1,124.5 | 1,355.5
Expenses |  |  |  |
Interest expense |  | 151.1 | 140.4 | 136.1
Deferred compensation | [2] | 23.2 | 5.3 | 5.3
Other operating costs and expenses |  | 4.6 | 4.2 | 5.4
Total expenses |  | 178.9 | 149.9 | 146.8
Income before income taxes |  | 1,566.2 | 974.6 | 1,208.7
Benefit for income taxes |  | 26.0 | 56.4 | 58.9
Net income attributable to Progressive |  | 1,592.2 | 1,031.0 | 1,267.6
Other comprehensive income (loss) |  | 348.8 | 133.0 | (222.7)
Comprehensive income attributable to Progressive |  | $ 1,941.0 | $ 1,164.0 | $ 1,044.9
[1] | Eliminated in consolidation.
[2] | See Note 4 – Employee Benefit Plans in these condensed financial statements.

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