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Fair Value Measurements Financial Assets and Liabilities (Details) (USD $)
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Jun. 30, 2013
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Jun. 30, 2012
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| Fair Value Measurements | ||||||||||
| Cash excluded from fair value measurement | $ 125,500,000 | $ 126,000,000 | ||||||||
| Time deposits excluded from fair value measurement | 43,413,000 | [1] | 62,431,000 | [1] | ||||||
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Total
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| Fair Value Measurements | ||||||||||
| Total cash equivalents and marketable securities | 2,750,011,000 | [2] | 2,346,058,000 | [3] | ||||||
| Derivative assets | 4,016,000 | 1,407,000 | ||||||||
| Executive Deferred Savings Plan | 136,461,000 | 125,354,000 | ||||||||
| Total financial assets | 2,890,488,000 | [2] | 2,472,819,000 | [3] | ||||||
| Derivative liabilities | (2,173,000) | (1,909,000) | ||||||||
| Executive Deferred Savings Plan, Other Current Liabilities | (137,849,000) | (125,329,000) | ||||||||
| Total financial liabilities | (140,022,000) | (127,238,000) | ||||||||
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Total | U.S. Treasury securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 93,787,000 | 91,438,000 | ||||||||
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Total | U.S. Government agency securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 598,031,000 | 634,492,000 | ||||||||
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Total | Municipal securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 103,455,000 | 66,543,000 | ||||||||
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Total | Corporate debt securities
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| Fair Value Measurements | ||||||||||
| Cash equivalents | 3,800,000 | |||||||||
| Marketable securities | 1,099,525,000 | 917,392,000 | ||||||||
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Total | Money market and other
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| Fair Value Measurements | ||||||||||
| Cash equivalents | 817,608,000 | 607,038,000 | ||||||||
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Total | Sovereign securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 33,805,000 | 29,145,000 | ||||||||
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Total | Equity securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 10,000 | |||||||||
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Level 1
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| Fair Value Measurements | ||||||||||
| Total cash equivalents and marketable securities | 1,522,985,000 | [2] | 1,339,683,000 | [3] | ||||||
| Derivative assets | 0 | 0 | ||||||||
| Executive Deferred Savings Plan | 96,180,000 | 95,304,000 | ||||||||
| Total financial assets | 1,619,165,000 | [2] | 1,434,987,000 | [3] | ||||||
| Derivative liabilities | 0 | 0 | ||||||||
| Executive Deferred Savings Plan, Other Current Liabilities | (97,570,000) | (94,799,000) | ||||||||
| Total financial liabilities | (97,570,000) | (94,799,000) | ||||||||
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Level 1 | U.S. Treasury securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 93,787,000 | 88,014,000 | ||||||||
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Level 1 | U.S. Government agency securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 598,031,000 | 634,492,000 | ||||||||
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Level 1 | Municipal securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 0 | 0 | ||||||||
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Level 1 | Corporate debt securities
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| Fair Value Measurements | ||||||||||
| Cash equivalents | 0 | |||||||||
| Marketable securities | 0 | 0 | ||||||||
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Level 1 | Money market and other
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| Fair Value Measurements | ||||||||||
| Cash equivalents | 817,608,000 | 607,038,000 | ||||||||
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Level 1 | Sovereign securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 13,559,000 | 10,129,000 | ||||||||
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Level 1 | Equity securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 10,000 | |||||||||
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Level 2
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| Fair Value Measurements | ||||||||||
| Total cash equivalents and marketable securities | 1,227,026,000 | [2] | 1,006,375,000 | [3] | ||||||
| Derivative assets | 4,016,000 | 1,407,000 | ||||||||
| Executive Deferred Savings Plan | 40,281,000 | 30,050,000 | ||||||||
| Total financial assets | 1,271,323,000 | [2] | 1,037,832,000 | [3] | ||||||
| Derivative liabilities | (2,173,000) | (1,909,000) | ||||||||
| Executive Deferred Savings Plan, Other Current Liabilities | (40,279,000) | (30,530,000) | ||||||||
| Total financial liabilities | (42,452,000) | (32,439,000) | ||||||||
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Level 2 | U.S. Treasury securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 0 | 3,424,000 | ||||||||
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Level 2 | U.S. Government agency securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 0 | 0 | ||||||||
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Level 2 | Municipal securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 103,455,000 | 66,543,000 | ||||||||
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Level 2 | Corporate debt securities
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| Fair Value Measurements | ||||||||||
| Cash equivalents | 3,800,000 | |||||||||
| Marketable securities | 1,099,525,000 | 917,392,000 | ||||||||
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Level 2 | Money market and other
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| Fair Value Measurements | ||||||||||
| Cash equivalents | 0 | 0 | ||||||||
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Level 2 | Sovereign securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | 20,246,000 | 19,016,000 | ||||||||
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Level 2 | Equity securities
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| Fair Value Measurements | ||||||||||
| Marketable securities | $ 0 | |||||||||
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