Annual report pursuant to Section 13 and 15(d)

Net Income Per Share (Details)

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Net Income Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 1 Months Ended 3 Months Ended 12 Months Ended
Aug. 06, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Jul. 09, 2013
Net Income Per Share                          
Net income   $ 134,770 $ 166,382 $ 106,630 $ 135,367 $ 247,877 $ 205,346 $ 110,797 $ 191,995 $ 543,149 $ 756,015 $ 794,488  
Weighted-average shares-basic, excluding unvested restricted stock units                   166,089,000 166,795,000 167,261,000  
Effect of dilutive options and restricted stock units                   3,171,000 3,352,000 3,091,000  
Weighted-average shares-diluted                   169,260,000 170,147,000 170,352,000  
Basic net income per share   $ 0.81 [1] $ 1.00 [1] $ 0.64 [1] $ 0.81 [1] $ 1.48 [1] $ 1.23 [1] $ 0.67 [1] $ 1.15 [1] $ 3.27 $ 4.53 $ 4.75  
Diluted net income per share   $ 0.80 [1] $ 0.98 [1] $ 0.63 [1] $ 0.80 [1] $ 1.46 [1] $ 1.21 [1] $ 0.66 [1] $ 1.13 [1] $ 3.21 $ 4.44 $ 4.66  
Anti-dilutive securities excluded from the computation of diluted net income per share                   1,366,000 3,123,000 8,003,000  
Payments of dividends                   $ 265,893 $ 233,561 $ 167,398  
Common stock, dividends per share, authorized, quarterly levels   $ 0.40       $ 0.35       $ 0.40 $ 0.35   $ 0.45
Common stock, dividends, per share, declared $ 0.45                 $ 1.60 $ 1.40 $ 1.00  
Dividends payable, date declared                   Aug. 06, 2013      
Dividends payable, date to be paid                   Sep. 03, 2013      
Dividends payable, date of record                   Aug. 16, 2013      
[1] Basic and diluted earnings per share are computed independently for each of the quarters presented based on the weighted-average basic and fully diluted shares outstanding for each quarter. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted earnings per share.