Schedule I Financial Statements of Parent Company Balance Sheet Parenthetical (Details) - shares	Dec. 31, 2020	Dec. 31, 2019
Condensed Balance Sheet Statements, Captions [Line Items]
Common stock, shares authorized (in shares)	600,000,000	600,000,000
Common stock, shares issued (in shares)	226,836,670	226,641,443
Parent
Condensed Balance Sheet Statements, Captions [Line Items]
Common stock, shares authorized (in shares)	600,000,000	600,000,000
Common stock, shares issued (in shares)	226,836,670	226,641,443