Convertible Preferred Stock and Preferred Stock Warrants (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2020

Dec. 31, 2019

Convertible Preferred Stock

Schedule of balance sheet and preferred stock

As of December 31, 2019, preferred stock consisted of the following ($ in millions, except for share amounts):

	As of
	December 31, 2019
		Preferred Stock					Common Stock
	Preferred	Issued and	Carrying		Liquidation		Issuable Upon
	Stock Authorized	Outstanding	Value		Preference		Conversion
Series Seed Preferred stock	7,905,140	7,905,140	$	12.9	$	13.0	7,905,140
Series A Preferred stock	3,328,774	3,328,774		14.0		13.6	3,328,774
Series B Preferred stock	4,511,417	4,511,417		34.1		34.1	4,511,417
Series C Preferred stock	8,703,846	8,703,846		119.8		120.1	8,703,846
Series D Preferred stock	7,107,930	7,107,930		299.4		300.0	7,107,930
	31,557,107	31,557,107	$	480.2	$	480.8	31,557,107

As of each balance sheet date, preferred stock consisted of the following ($ in millions, except for share amounts):

	December 31, 2018
		Preferred
	Preferred	Stock					Common Stock
	Stock	Issued and	Carrying		Liquidation		Issuable Upon
	Authorized	Outstanding	Value		Preference		Conversion
Series Seed Preferred stock	7,905,140	7,905,140	$	12.9	$	13.0	7,905,140
Series A Preferred stock	3,328,774	3,328,774		14.0		13.6	3,328,774
Series B Preferred stock	4,511,417	4,511,417		34.1		34.1	4,511,417
Series C Preferred Stock	8,703,846	8,700,224		119.8		120.1	8,700,224
	24,449,177	24,445,555	$	180.8	$	180.8	24,445,555

	December 31, 2019
		Preferred
	Preferred	Stock					Common Stock
	Stock	Issued and	Carrying		Liquidation		Issuable Upon
	Authorized	Outstanding	Value		Preference		Conversion
Series Seed Preferred stock	7,905,140	7,905,140	$	12.9	$	13.0	7,905,140
Series A Preferred stock	3,328,774	3,328,774		14.0		13.6	3,328,774
Series B Preferred stock	4,511,417	4,511,417		34.1		34.1	4,511,417
Series C Preferred Stock	8,703,846	8,703,846		119.8		120.1	8,703,846
Series D Preferred Stock	7,107,930	7,107,930		299.4		300.0	7,107,930
	31,557,107	31,557,107	$	480.2	$	480.8	31,557,107