Fair Value Measurements

3 Months Ended

Mar. 31, 2012

Fair Value Measurements [Abstract]

Fair Value Measurements

13.      Fair Value Measurements

Fair value standards under U.S. GAAP define fair value, establish a framework for measuring fair value in applying generally accepted accounting principles, and require disclosures about fair value measurements.  The standards also identify two kinds of inputs that are used to determine the fair value of assets and liabilities: observable and unobservable.  Observable inputs are based on market data or independent sources while unobservable inputs are based on the Company's own market assumptions.  Once inputs have been characterized, the inputs are prioritized into one of three broad levels (provided in the table below) used to measure fair value.

Fair value standards apply whenever an entity is measuring fair value under other accounting pronouncements that require or permit fair value measurement and require the use of observable market data when available.  As of March 31, 2012 and December 31, 2011, the Company did not have any financial assets or liabilities that were measured using unobservable (or Level 3) inputs.

The following tables provide fair value measurement information for the Company's major categories of financial assets and liabilities measured on a recurring basis (in millions):

		Fair value measurements at reporting date using
	March 31,  2012	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	$1,346	$1,346
Other current assets (1)	$   101		$101
Non-current assets:
Other assets (2)	$    36		$ 36
Current liabilities:
Other accrued liabilities (1)	$    15		$ 15
Non-current liabilities:
Other liabilities (1)	$      3		$   3

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

(2)   Other assets include asset backed securities which are measured using observable quoted prices for similar assets.

		Fair value measurements at reporting date using
	December 31,  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	$1,164	$1,155	$    9	(1)
Other current assets (2)	$    12		$  12
Non-current assets:
Other assets (3)	$    35		$  35
Current liabilities:
Other accrued liabilities (2)	$  163		$163
Non-current liabilities:
Other liabilities (2)	$      6		$    6

(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.

(3) Other assets include asset backed securities which are measured using observable quoted prices for similar assets.