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Equity and Share-Based Compensation - Tender Offer (Details) - Common Stock - $ / shares
Feb. 14, 2019
Jan. 14, 2019
Subsequent Event    
Stock repurchase (in shares)   5,000,000
Purchase price per share (in dollars per share) $ 10.00 $ 10.00
Shares repurchased (in shares) 5,000,000  
Retirement of treasury stock (in shares) 5,000,000