Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Significant Accounting Policies

Changes in warranty liabilities

Standard Warranty Liability

($ in millions)

	2011			2010
Balance at January 1	$	375		$	316
Current period accruals	435			407
Accrual adjustments to reflect actual experience	18			69
Charges incurred	(420		)	(418		)
Balance at December 31	$	407		$	375

Extended Warranty Liability (Deferred Income)

($ in millions)

	2011			2010
Balance at January 1	$	670		$	665
Revenue deferred for new extended warranty contracts	314			329
Amortization of deferred revenue	(330		)	(301		)
Other*	(19		)	(22		)
Balance at December 31	$	636		$	670
Current portion	$	301		$	315
Noncurrent portion	335			355
Balance at December 31	$	636		$	670

* Other consists primarily of foreign currency translation adjustments.