Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2011

SEC Schedule Article 12-09 Valuation And Qualifying Accounts [Abstract]

Schedule Of Valuation And Qualifying Accounts Disclosure [Text Block]

SCHEDULE II

UNITED TECHNOLOGIES CORPORATION AND SUBSIDIARIES

Valuation and Qualifying Accounts

Three Years Ended December 31, 2011

(Millions of Dollars)

Allowances for Doubtful Accounts and Other Customer Financing Activity:
Balance December 31, 2008		$	386
	Provision charged to income		145
	Doubtful accounts written off (net)		(80)
Balance December 31, 2009			451
	Provision charged to income		58
	Doubtful accounts written off (net)		(47)
	Other adjustments		(14)
Balance December 31, 2010			448
	Provision charged to income		88
	Doubtful accounts written off (net)		(38)
	Other adjustments		(42)
Balance December 31, 2011		$	456
Future Income Tax Benefits - Valuation allowance:
Balance December 31, 2008		$	698
	Additions charged to income tax expense		186
	Additions charged to goodwill, due to acquisitions		3
	Reductions credited to income tax expense		(16)
	Other adjustments		32
Balance December 31, 2009			903
	Additions charged to income tax expense		93
	Reductions charged to goodwill, due to acquisitions		(3)
	Reductions credited to income tax expense		(44)
	Other adjustments		(38)
Balance December 31, 2010			911
	Additions charged to income tax expense		130
	Reductions credited to income tax expense		(27)
	Other adjustments		(37)
Balance December 31, 2011		$	977