Fair Value Measurements and Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value Measurements and Financial Instruments

Schedule of assets and liabilities that are measured at fair value on a recurring basis

  The following table presents the categorization of the Company's assets and liabilities that are measured at fair value on a recurring basis at December 31, 2012 and 2011, respectively (in millions):

			Fair Value Measurements Using
	Balance at December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Money market funds and highly liquid debt securities (1)	$	2,133	$	2,108	$	25	$	—
Other investments
Fixed maturity securities
Corporate bonds		12		—		—		12
Government bonds		8		—		8		—
Equity securities		5		5		—		—
Derivatives
Interest rate contracts		17		—		17		—
Foreign exchange contracts		193		—		193		—
Liabilities:
Derivatives
Foreign exchange contracts		251		—		251		—

(1)

Includes $2,108 million of money market funds and $25 million of highly liquid debt securities that are classified as fiduciary assets, short-term investments or cash equivalents in the Consolidated Statements of Financial Position, depending on their nature and initial maturity. See Note 7 "Investments" for additional information regarding the Company's investments.

			Fair Value Measurements Using
	Balance at December 31, 2011		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Money market funds and highly liquid debt securities (1)	$	2,428	$	2,403	$	25	$	—
Other investments
Fixed maturity securities
Corporate bonds		12		—		—		12
Government bonds		3		—		3		—
Derivatives
Interest rate contracts		16		—		16		—
Foreign exchange contracts		141		—		141		—
Liabilities:
Derivatives
Foreign exchange contracts		189		—		189		—

(1)

Includes $2,403 million of money market funds and $25 million of highly liquid debt securities that are classified as fiduciary assets, short-term investments or cash equivalents in the Consolidated Statements of Financial Position, depending on their nature and initial maturity. See Note 7 "Investments" for additional information regarding the Company's investments.

Schedule of financial instruments where the carrying amounts and fair values differ

  The fair value of all long-term debt instruments is classified as Level 2. The following table discloses the Company's financial instruments where the carrying amounts and fair values differ (in millions):

As of December 31	2012				2011
	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt	$	3,713	$	4,162	$	4,155	$	4,494