CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Parenthetical)	6 Months Ended
	Jun. 30, 2014
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises In Period	92,000
Common Stock Class D [Member]
Conversion Of Class A Stock, Shares Converted	278,482
Conversion Of Class C Stock, Shares Converted	192,142
Common Stock [Member]
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises In Period	92,040