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Subsequent Event Subsequent Event (Notes)
 12 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]  
Subsequent Events [Text Block]
(9)    Subsequent Event
On January 2, 2017, the Company declared a quarterly dividend on its common stock of $0.2225 per share or $169,700,000, payable February 1, 2017 to stockholders of record as of the close of business January 13, 2017.