FAIR VALUE MEASUREMENTS (Details Tables) (USD $)	Sep. 30, 2012	Dec. 31, 2011
ASSETS:
Short-term investments	$ 3,769,527,000	$ 2,024,827,000
LIABILITIES:
Redeemable noncontrolling interests	133,221,000	127,045,000
Foreign government securities [Member]
ASSETS:
Short-term investments	1,762,686,000	1,074,186,000
U.S. government securities [Member]
ASSETS:
Short-term investments	2,006,841,000	923,322,000
U.S. agency securities [Member]
ASSETS:
Short-term investments		26,951,000
U.S. corporate notes [Member]
ASSETS:
Short-term investments		368,000
Recurring Basis [Member] | Level 2 [Member]
ASSETS:
Foreign exchange derivatives	13,784,000	60,455,000
Total assets at fair value	3,783,311,000	2,085,282,000
LIABILITIES:
Foreign exchange derivatives	23,226,000	1,107,000
Total liabilities at fair value	23,226,000	1,107,000
Recurring Basis [Member] | Level 2 [Member] | Foreign government securities [Member]
ASSETS:
Short-term investments	1,762,686,000	1,074,186,000
Recurring Basis [Member] | Level 2 [Member] | U.S. government securities [Member]
ASSETS:
Short-term investments	2,006,841,000	923,322,000
Recurring Basis [Member] | Level 2 [Member] | U.S. agency securities [Member]
ASSETS:
Short-term investments		26,951,000
Recurring Basis [Member] | Level 2 [Member] | U.S. corporate notes [Member]
ASSETS:
Short-term investments		368,000
Recurring Basis [Member] | Level 3 [Member]
LIABILITIES:
Redeemable noncontrolling interests	133,221,000	127,045,000
Total liabilities at fair value	133,221,000	127,045,000
Recurring Basis [Member] | Total [Member]
ASSETS:
Foreign exchange derivatives	13,784,000	60,455,000
Total assets at fair value	3,783,311,000	2,085,282,000
LIABILITIES:
Foreign exchange derivatives	23,226,000	1,107,000
Redeemable noncontrolling interests	133,221,000	127,045,000
Total liabilities at fair value	156,447,000	128,152,000
Recurring Basis [Member] | Total [Member] | Foreign government securities [Member]
ASSETS:
Short-term investments	1,762,686,000	1,074,186,000
Recurring Basis [Member] | Total [Member] | U.S. government securities [Member]
ASSETS:
Short-term investments	2,006,841,000	923,322,000
Recurring Basis [Member] | Total [Member] | U.S. agency securities [Member]
ASSETS:
Short-term investments		26,951,000
Recurring Basis [Member] | Total [Member] | U.S. corporate notes [Member]
ASSETS:
Short-term investments		$ 368,000