| 
         公允价值测量金融资产和负债(详情)(USD $) | 
         Jun. 30, 2014 | 
         Jun. 30, 2013 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公允价值测量 | ||||||||||
| 从公允价值计量中排除的现金 | $ 106,700,000 | $ 125,500,000 | ||||||||
| 从公允价值测量中排除的时间沉积物 | 33,509,000 | [1] | 43,413,000. | [1] | ||||||
| 
         Total | ||||||||||
| 公允价值测量 | ||||||||||
| Total cash equivalents and marketable securities | 3,012,408,000 | [2] | 2,750,011,000. | [3] | ||||||
| 衍生资产 | 666,000 | 4,016,000. | ||||||||
| Executive Deferred Savings Plan | 159,995,000 | 136,461,000 | ||||||||
| 以公允价值计量的总资产 | 3,173,069,000 | [2] | 2,890,488,000 | [3] | ||||||
| 衍生责任 | (898,000) | (2,173,000) | ||||||||
| Total financial liabilities | (898,000) | (2,173,000) | ||||||||
| 
         总|U.S. Treasury securities | ||||||||||
| 公允价值测量 | ||||||||||
| Marketable securities: | 384,400,000. | 93,787,000. | ||||||||
| 
         总|美国政府机构证券 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 28,000,000. | |||||||||
| Marketable securities: | 839,843,000. | 598,031,000 | ||||||||
| 
         总|市证券 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 2,891,000 | |||||||||
| Marketable securities: | 93,325,000 | 103,455,000 | ||||||||
| 
         总|公司债务证券 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 68,992,000 | 3,800,000 | ||||||||
| Marketable securities: | 1,155,176,000 | 1,099,525,000 | ||||||||
| 
         总|货币市场和其他 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 397,517,000 | 817,608,000 | ||||||||
| 
         总|Sovereign securities | ||||||||||
| 公允价值测量 | ||||||||||
| Marketable securities: | 42,264,000. | 33,805,000. | ||||||||
| 
         Level 1 | ||||||||||
| 公允价值测量 | ||||||||||
| Total cash equivalents and marketable securities | 1,592,012,000 | [2] | 1,522,985,000 | [3] | ||||||
| 衍生资产 | 0. | 0. | ||||||||
| Executive Deferred Savings Plan | 105,311,000. | 96,180,000 | ||||||||
| 以公允价值计量的总资产 | 1,697,323,000 | [2] | 1,619,165,000 | [3] | ||||||
| 衍生责任 | 0. | 0. | ||||||||
| Total financial liabilities | 0. | 0. | ||||||||
| 
         1级|U.S. Treasury securities | ||||||||||
| 公允价值测量 | ||||||||||
| Marketable securities: | 365,401,000 | 93,787,000. | ||||||||
| 
         1级|美国政府机构证券 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 8,000,000 | |||||||||
| Marketable securities: | 811,841,000 | 598,031,000 | ||||||||
| 
         1级|市证券 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 0. | |||||||||
| Marketable securities: | 0. | 0. | ||||||||
| 
         1级|公司债务证券 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 0. | 0. | ||||||||
| Marketable securities: | 0. | 0. | ||||||||
| 
         1级|货币市场和其他 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 397,517,000 | 817,608,000 | ||||||||
| 
         1级|Sovereign securities | ||||||||||
| 公允价值测量 | ||||||||||
| Marketable securities: | 9,253,000. | 13,559,000 | ||||||||
| 
         Level 2 | ||||||||||
| 公允价值测量 | ||||||||||
| Total cash equivalents and marketable securities | 1,420,396,000 | [2] | 1,227,026,000 | [3] | ||||||
| 衍生资产 | 666,000 | 4,016,000. | ||||||||
| Executive Deferred Savings Plan | 54,684,000 | 40,281,000 | ||||||||
| 以公允价值计量的总资产 | 1,475,746,000 | [2] | 1,271,323,000 | [3] | ||||||
| 衍生责任 | (898,000) | (2,173,000) | ||||||||
| Total financial liabilities | (898,000) | (2,173,000) | ||||||||
| 
         等级2 |U.S. Treasury securities | ||||||||||
| 公允价值测量 | ||||||||||
| Marketable securities: | 18,999,000 | 0. | ||||||||
| 
         等级2 |美国政府机构证券 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 20,000,000. | |||||||||
| Marketable securities: | 28,002,000 | 0. | ||||||||
| 
         等级2 |市证券 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 2,891,000 | |||||||||
| Marketable securities: | 93,325,000 | 103,455,000 | ||||||||
| 
         等级2 |公司债务证券 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 68,992,000 | 3,800,000 | ||||||||
| Marketable securities: | 1,155,176,000 | 1,099,525,000 | ||||||||
| 
         等级2 |货币市场和其他 | ||||||||||
| 公允价值测量 | ||||||||||
| 现金等价物: | 0. | 0. | ||||||||
| 
         等级2 |Sovereign securities | ||||||||||
| 公允价值测量 | ||||||||||
| Marketable securities: | $ 33,011,000 | 20,246,000美元 | ||||||||
| 
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