Annual report pursuant to Section 13 and 15(d)

Business and Summary of Significant Accounting Principles (Changes in Issued Common Stock) (Details)

v3.3.1.900
Business and Summary of Significant Accounting Principles (Changes in Issued Common Stock) (Details) - shares
shares in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Class A Common Stock      
Common Stock [Roll Forward]      
Balance, Beginning 37,998 37,299 38,534
Class B shares converted to Class A 5 6 4
Shares issued upon stock option exercises 219 51 87
Share awards issued 688 1,267 680
Shares repurchased and retired (2,983) (429) (1,822)
Shares acquired to settle minimum statutory tax withholding requirements and subsequently retired (334) (196) (147)
Other     (37)
Balance, Ending 35,593 37,998 37,299
Class B Common Stock      
Common Stock [Roll Forward]      
Balance, Beginning 3,159 3,165 3,169
Class B shares converted to Class A (5) (6) (4)
Shares issued upon stock option exercises 0 0 0
Share awards issued 0 0 0
Shares repurchased and retired 0 0 0
Shares acquired to settle minimum statutory tax withholding requirements and subsequently retired 0 0 0
Other     0
Balance, Ending 3,154 3,159 3,165