Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

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Fair Value Measurements (Details) (USD $)
Dec. 31, 2012
Jun. 30, 2012
Fair Value Measurements [Abstract]    
Cash excluded from fair value measurement $ 125,700,000 $ 126,000,000
Time deposits excluded from fair value measurement 59,467,000 [1] 62,431,000 [1]
Total
   
Fair Value Measurements    
Cash Equivalents and Marketable Securities Fair Value Disclosure 2,393,058,000 [2] 2,346,058,000 [3]
Derivative assets 6,169,000 1,407,000
Executive Deferred Savings Plan    
EDSP money market and other 2,708,000 732,000
EDSP mutual funds 129,336,000 124,622,000
Executive Deferred Savings Plan total 132,044,000 125,354,000
Total Financial Assets 2,531,271,000 [2] 2,472,819,000 [3]
Derivative liabilities (870,000) (1,909,000)
Total Financial Liabilities (870,000) (1,909,000)
Total | Money market and other
   
Fair Value Measurements    
Cash Equivalents 617,113,000 607,038,000
Total | U.S. Treasury securities
   
Fair Value Measurements    
Marketable securities 92,075,000 91,438,000
Total | U.S. Government agency securities
   
Fair Value Measurements    
Cash Equivalents 5,515,000  
Marketable securities 574,781,000 634,492,000
Total | Municipal securities
   
Fair Value Measurements    
Marketable securities 77,594,000 66,543,000
Total | Corporate debt securities
   
Fair Value Measurements    
Marketable securities 1,008,378,000 917,392,000
Total | Sovereign securities
   
Fair Value Measurements    
Marketable securities 17,245,000 29,145,000
Total | Equity securities
   
Fair Value Measurements    
Marketable securities 357,000 10,000
Level 1
   
Fair Value Measurements    
Cash Equivalents and Marketable Securities Fair Value Disclosure 1,292,898,000 [2] 1,339,683,000 [3]
Derivative assets 0 0
Executive Deferred Savings Plan    
EDSP money market and other 2,708,000 732,000
EDSP mutual funds 97,065,000 94,572,000
Executive Deferred Savings Plan total 99,773,000 95,304,000
Total Financial Assets 1,392,671,000 [2] 1,434,987,000 [3]
Derivative liabilities 0 0
Total Financial Liabilities 0 0
Level 1 | Money market and other
   
Fair Value Measurements    
Cash Equivalents 617,113,000 607,038,000
Level 1 | U.S. Treasury securities
   
Fair Value Measurements    
Marketable securities 88,578,000 88,014,000
Level 1 | U.S. Government agency securities
   
Fair Value Measurements    
Cash Equivalents 5,515,000  
Marketable securities 571,783,000 634,492,000
Level 1 | Municipal securities
   
Fair Value Measurements    
Marketable securities 0 0
Level 1 | Corporate debt securities
   
Fair Value Measurements    
Marketable securities 0 0
Level 1 | Sovereign securities
   
Fair Value Measurements    
Marketable securities 9,552,000 10,129,000
Level 1 | Equity securities
   
Fair Value Measurements    
Marketable securities 357,000 10,000
Level 2
   
Fair Value Measurements    
Cash Equivalents and Marketable Securities Fair Value Disclosure 1,100,160,000 [2] 1,006,375,000 [3]
Derivative assets 6,169,000 1,407,000
Executive Deferred Savings Plan    
EDSP money market and other 0 0
EDSP mutual funds 32,271,000 30,050,000
Executive Deferred Savings Plan total 32,271,000 30,050,000
Total Financial Assets 1,138,600,000 [2] 1,037,832,000 [3]
Derivative liabilities (870,000) (1,909,000)
Total Financial Liabilities (870,000) (1,909,000)
Level 2 | Money market and other
   
Fair Value Measurements    
Cash Equivalents 0 0
Level 2 | U.S. Treasury securities
   
Fair Value Measurements    
Marketable securities 3,497,000 3,424,000
Level 2 | U.S. Government agency securities
   
Fair Value Measurements    
Cash Equivalents 0  
Marketable securities 2,998,000 0
Level 2 | Municipal securities
   
Fair Value Measurements    
Marketable securities 77,594,000 66,543,000
Level 2 | Corporate debt securities
   
Fair Value Measurements    
Marketable securities 1,008,378,000 917,392,000
Level 2 | Sovereign securities
   
Fair Value Measurements    
Marketable securities 7,693,000 19,016,000
Level 2 | Equity securities
   
Fair Value Measurements    
Marketable securities $ 0 $ 0
[1] Time deposits excluded from fair value measurements.
[2] Excludes cash of $125.7 million held in operating accounts and time deposits of $59.5 million as of December 31, 2012.
[3] Excludes cash of $126.0 million held in operating accounts and time deposits of $62.4 million as of June 30, 2012.