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Earnings Per Share and Certain Related Information - Narrative (Details) - USD ($)
1 Months Ended
Jan. 18, 2018
Jul. 23, 2015
Earnings Per Share Reconciliation [Abstract]    
Amount authorized to be repurchased   $ 500,000,000
Number of shares repurchased (in shares)   49,000
Quarterly dividend per share (in dollars per share) $ 0.15  
Dividends payment date Mar. 16, 2018  
Dividends record date Feb. 16, 2018