Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2011

Financial Instruments [Abstract]

Estimated Fair Value Of Significant Financial Instruments

	September 30, 2011				December 31, 2010
(In millions of dollars)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Cash and cash equivalents	$	1,714	$	1,714	$	1,894	$	1,894
Long-term investments	$	56	$	56	$	68	$	64
Short-term debt	$	260	$	263	$	8	$	8
Long-term debt	$	2,670	$	2,914	$	3,026	$	3,234

Net Unrealized Gains And (Losses) Related To Available For Sale Securities

(In millions of dollars)	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011			2010
Unrealized gains (pre-tax)	$	—	$	—	$	—		$	1
Unrealized losses (pre-tax)	$	—	$	—	$	(1	)	$	—

Proceeds From Sale Of Available For Sale Securities

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions of dollars)	2011		2010		2011		2010
Proceeds from the sale of available for sale securities	$	—	$	1	$	3	$	15

Gains (Losses) From Equity Method And Other Investments

	Three Months Ended September 30,					Nine Months Ended September 30,
(In millions of dollars)	2011		2010			2011			2010
Equity method gains (losses)	$	—	$	(4	)	$	14		$	13
Gains (losses) on cost method investments	—		1			(2		)	2
Gains (losses) from equity and cost method investments	—		(3		)	12			15
Realized gains on available for sale securities	—		1			1			9
Investment income (loss)	$	—	$	(2	)	$	13		$	24