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CONSOLIDATED BALANCE SHEETS (Parenthetical)
Dec. 31, 2019
$ / shares
shares
Shares subject to possible redemption, par value (in dollars per share) | $ / shares $ 0.00001
Outstanding shares 191,139,933
Preferred stock, par value | $ / shares $ 0.00001
Preferred stock, shares authorized 4,305
Preferred stock, shares issued 2,961
Preferred stock, shares outstanding 2,961
Common stock, par value | $ / shares $ 0.000001
Common stock, shares authorized 386,728,323
Common stock, shares issued 9,392,682
Star Peak Energy Transition Corp [Member]  
Preferred stock, par value | $ / shares $ 0.0001
Preferred stock, shares authorized 1,000,000
Preferred stock, shares issued 0
Preferred stock, shares outstanding 0
Star Peak Energy Transition Corp [Member] | Class A common stock  
Shares subject to possible redemption, par value (in dollars per share) | $ / shares $ 0.0001
Outstanding shares 0
Shares subject to possible redemption, redemption value (in dollars per share) | $ / shares $ 10.00
Common stock, par value | $ / shares $ 0.0001
Common stock, shares authorized 400,000,000
Common stock, shares issued 0
Common stock, shares outstanding 0
Star Peak Energy Transition Corp [Member] | Common Class B  
Common stock, par value | $ / shares $ 0.0001
Common stock, shares authorized 40,000,000
Common stock, shares issued 10,062,500
Common stock, shares outstanding 10,062,500
Star Peak Energy Transition Corp [Member] | Common Class B | Over-allotment  
Maximum shares subject to forfeiture 1,312,500