Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Common stock, par value (in usd per share)	$ 0.0000001	$ 0.0000001
Common stock, shares authorized (shares)	350,000,000	350,000,000
Common stock, shares outstanding (shares)	93,853,390	85,832,454
Common stock, shares issued (shares)	93,853,390	85,832,454
Variable interest entity, assets	$ 45.1	$ 48.3
Variable interest entity, liabilities	$ 3.0	$ 1.2

Face amount or stated value per share of common stock.

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The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

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