XML 71 R53.htm IDEA: XBRL DOCUMENT v3.10.0.1
Related Party Transactions - Contribution Agreement (Details) - Chief Executive Officer - Contribution Agreement - Class A
shares in Millions
Sep. 12, 2018
USD ($)
shares
Related Party Transaction [Line Items]  
Contribution of Class A common stock from related party, fee charged | $ $ 0
Contribution of Class A common stock from related party (in shares) | shares 0.2