Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Notes to Condensed Consolidated Financial Statements [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Text Block]

	September 30, 2013				December 31, 2012
(Dollars in millions)	Derivatives designated as hedging instruments		Derivatives not designated as hedging instruments		Derivatives designated as hedging instruments		Derivatives not designated as hedging instruments
Balance Sheet Asset Locations:
Other assets, current	$	38	$	23	$	48	$	47
Other assets	22		3		30		3
	60		26		78		50
Total Asset Derivative Contracts			$	86			$	128
Balance Sheet Liability Locations:
Accrued liabilities	$	20	$	53	$	10	$	136
Other long-term liabilities	13		2		1		2
	33		55		11		138
Total Liability Derivative Contracts			$	88			$	149

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Text Block]

	Quarter Ended September 30,				Nine Months Ended September 30,
(Dollars in millions)	2013		2012		2013			2012
Gain (loss) recorded in Accumulated other comprehensive loss	$	97	$	146	$	(64	)	$	83
Gain (loss) reclassified from Accumulated other comprehensive loss into Product sales (effective portion)	$	1	$	7	$	(22	)	$	26

Schedule of Foreign Exchange Contracts Not Designated as Hedges, Gain (Loss) In Statement of Financial Performance [TextBlock]

	Quarter Ended September 30,					Nine Months Ended September 30,
(Dollars in millions)	2013		2012			2013		2012
Gain (loss) recognized in Other income, net	$	10	$	(19	)	$	33	$	(21	)

Fair Value, Measurement Inputs, Disclosure [Text Block]

(Dollars in millions)	Total Carrying Value at December 31, 2012			Quoted price in active markets (Level 1)		Significant other observable inputs (Level 2)			Unobservable inputs (Level 3)
Recurring fair value measurements:
Available-for-sale securities	$	781		$	781	$	—		$	—
Derivative assets	128			—		128			—
Derivative liabilities	(149		)	—		(149		)	—
Nonrecurring fair value measurements:
Equity method investment	432			—		432			—
Business dispositions	84			—		84			—

(Dollars in millions)	Total Carrying Value at September 30, 2013			Quoted price in active markets (Level 1)		Significant other observable inputs (Level 2)			Unobservable inputs (Level 3)
Recurring fair value measurements:
Available-for-sale securities	$	882		$	882	$	—		$	—
Derivative assets	86			—		86			—
Derivative liabilities	(88		)	—		(88		)	—
Nonrecurring fair value measurements:
Business dispositions	40			—		40			—

Fair Value, by Balance Sheet Grouping [Text Block]

	September 30, 2013						December 31, 2012
(Dollars in millions)	Carrying Amount			Fair Value			Carrying Amount			Fair Value
Long-term receivables	$	651		$	642		$	499		$	464
Customer financing notes receivable	438			388			375			371
Short-term borrowings	(303		)	(303		)	(503		)	(503		)
Long-term debt (excluding capitalized leases)	(20,837		)	(20,937		)	(22,665		)	(25,606		)
Long-term liabilities	(284		)	(257		)	(182		)	(167		)

(Dollars in millions)	Total Fair Value at September 30, 2013			Quoted price in active markets (Level 1)		Significant other observable inputs (Level 2)			Unobservable inputs (Level 3)
Long-term receivables	$	642		$	—	$	642		$	—
Customer financing notes receivable	388			—		388			—
Short-term borrowings	(303		)	—		(100		)	(203		)
Long-term debt (excluding capitalized leases)	(20,937		)	—		(20,830		)	(107		)
Long-term liabilities	(257		)	—		(257		)	—