Schedule II Schedule II

12 Months Ended

Dec. 31, 2018

SEC Schedule, 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, 2018

(Millions of Dollars)

Allowances for Doubtful Accounts and Other Customer Financing Activity:
Balance, December 31, 2015	$	553
Provision charged to income	64
Doubtful accounts written off (net)	(105		)
Other adjustments	(45		)
Balance, December 31, 2016	467
Provision charged to income	88
Doubtful accounts written off (net)	(82		)
Other adjustments	(17		)
Balance, December 31, 2017	456
Provision charged to income	54
Doubtful accounts written off (net)	(37		)
Other adjustments	15
Balance, December 31, 2018	$	488
Future Income Tax Benefits—Valuation allowance:
Balance, December 31, 2015	$	591
Additions charged to income tax expense	32
Reductions credited to income tax expense	(61		)
Other adjustments	(17		)
Balance, December 31, 2016	545
Additions charged to income tax expense	45
Reductions credited to income tax expense	(29		)
Other adjustments	21
Balance, December 31, 2017	582
Additions charged to income tax expense	61
Additions charged to goodwill, due to acquisitions	25
Reductions credited to income tax expense	(25		)
Other adjustments	(38		)
Balance, December 31, 2018	$	605