XML 77 R62.htm IDEA: XBRL DOCUMENT v3.20.4
Stockholders' Equity - Additional Information (Details) - Common Stock - At The Market Offering Program - USD ($)
shares in Millions, $ in Millions
Nov. 05, 2019
Dec. 31, 2020
Class of Stock [Line Items]    
Value of shares authorized $ 360.0  
Shares available for issuance (in shares)   140.2