Consolidated Balance Sheets - USD ($) $ in Millions		Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Investments - Available-for-sale, at fair value:
Fixed maturities (amortized cost: $18,583.1, $13,708.0, and $16,287.1)		$ 18,660.0	$ 16,243.8	$ 13,916.9
Equity securities:
Nonredeemable preferred stocks (cost: $700.6, $726.6, and $734.2)		813.7	853.5	860.1
Common equities (cost: $1,485.5, $1,576.1, and $1,437.5)		3,209.5	2,812.4	2,868.0
Short-term investments (amortized cost: $4,311.5, $5,876.2, and $3,572.9)		4,311.5	3,572.9	5,876.2
Total investments		26,994.7	23,482.6	23,521.2
Cash		224.9	211.5	143.4
Restricted cash1	[1]	31.4	14.9	22.3
Accrued investment income		113.0	103.9	97.3
Premiums receivable, net of allowance for doubtful accounts of $189.3, $176.8, and $186.8		5,519.9	4,509.2	4,743.6
Reinsurance recoverables, including $76.4, $67.5, and $83.8 on paid losses and loss adjustment expenses		2,701.1	1,884.8	1,901.7
Prepaid reinsurance premiums		211.7	170.5	174.4
Deferred acquisition costs		782.6	651.2	675.4
Property and equipment, net of accumulated depreciation of $908.4, $830.1, and $845.8		1,129.4	1,177.1	1,115.0
Goodwill		452.7	449.4	449.4
Intangible assets, net of accumulated amortization of $157.7, $94.0, and $109.5		384.6	432.8	448.3
Other assets		386.6	339.6	328.8
Total assets		38,932.6	33,427.5	33,620.8
Liabilities
Unearned premiums		9,005.3	7,468.3	7,792.4
Loss and loss adjustment expense reserves		13,353.3	11,368.0	11,228.2
Net deferred income taxes		201.5	111.3	156.9
Dividends payable		0.0	395.4	0.0
Accounts payable, accrued expenses, and other liabilities		3,272.7	2,495.5	2,722.2
Debt	[2]	3,312.2	3,148.2	3,153.9
Total liabilities		29,145.0	24,986.7	25,053.6
Redeemable noncontrolling interest (NCI)3	[3]	498.2	483.7	472.5
Common shares, $1.00 par value (authorized 900.0; issued 797.5, including treasury shares of 215.9, 216.7, and 217.6)		581.6	579.9	580.8
Paid-in capital		1,365.1	1,303.4	1,284.7
Retained earnings		6,116.5	5,140.4	5,183.1
Accumulated other comprehensive income:
Net unrealized gains (losses) on securities		1,240.1	939.6	1,057.2
Net unrealized losses on forecasted transactions		(15.0)	(9.4)	(9.1)
Foreign currency translation adjustment		(0.3)	(1.1)	(0.8)
Accumulated other comprehensive (income) loss attributable to NCI		1.4	4.3	(1.2)
Total accumulated other comprehensive income attributable to Progressive		1,226.2	933.4	1,046.1
Total shareholders’ equity		9,289.4	7,957.1	8,094.7
Total liabilities, redeemable NCI, and shareholders’ equity		$ 38,932.6	$ 33,427.5	$ 33,620.8

[1] See Note 7 – Supplemental Cash Flow Information for further discussion.

[2] Consists of both short-term and long-term debt. See Note 4 – Debt for further discussion.

[3] See Note 12 – Redeemable Noncontrolling Interest for further discussion.