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Redeemable Noncontrolling Interest
9 Months Ended
Sep. 30, 2020
Temporary Equity Disclosure [Abstract]  
Redeemable Noncontrolling Interest Redeemable Noncontrolling Interest — In connection with the April 2015 acquisition of a controlling interest in ARX, The Progressive Corporation entered into a stockholders’ agreement with the other ARX stockholders. On April 1, 2020, Progressive purchased all remaining outstanding stock, including shares from exercised stock options, of ARX under a separately negotiated purchase agreement at a total cost of $243.0 million.
The changes in the components of redeemable NCI were:
Nine Months Ended September 30,Year Ended
(millions)20202019December 31, 2019
Balance, beginning of period$225.6 $214.5 $214.5 
Net income attributable to NCI5.9 9.7 
Other comprehensive income (loss) attributable to NCI1
5.8 4.6 
Exercise of employee stock options16.0 7.7 7.7 
Purchase/change of ARX minority shares(241.6)(11.2)(11.2)
Change in redemption value of NCI0.2 0.3 
Balance, end of period$$222.9 $225.6 
1 Amount represents the other comprehensive income (loss) attributable to NCI, as reflected on the consolidated statements of comprehensive income; changes in accumulated other comprehensive income (loss) attributable to NCI due to a change in the minority ownership percentage does not impact the amount of redeemable NCI.