Fair Value Measurements (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2011

Dec. 31, 2010

Fair Value Measurements

Fair Value, Measurement Inputs, Disclosure

		Fair value measurements at reporting date using
	September 30,  2011	Quoted prices in active markets for identical assets (Level 1)	Significant other observable inputs (Level 2)	Significant unobservable inputs (Level 3)
Current assets:
Short-term investments (1)	$1,520	$1,512	$   8
Other current assets (2)	$       9		$   9
Non-current assets:
Other assets	$     38		$ 38
Non-current assets:
Other assets (2)	$       1		$   1
Current liabilities:
Other accrued liabilities (2)	$  170		$170
Non-current liabilities:
Other liabilities (2)	$    25		$  25

(1) Short-term investments are measured using observable quoted prices for similar assets.

(2) Derivative assets and liabilities include foreign exchange contracts which are measured using observable quoted prices for similar assets and liabilities.

		Fair value measurements at reporting date using
	December 31,  2010	Quoted prices in active markets for identical assets (Level 1)	Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Current assets:
Short-term investments (1)	$1,752	$1,737	$  15	(1)
Other current assets (2)	$       5		$    5
Non-current assets:
Other assets	$     45		$  45
Current liabilities:
Other accrued liabilities (2)	$   155		$155
Non-current liabilities:
Other liabilities (2)	$     45		$  45

(1) Short-term investments are measured using observable quoted prices for similar assets.

(2) Derivative assets and liabilities include foreign exchange contracts which are measured using observable quoted prices for similar assets and liabilities.