Segment Financial Data (Tables)
 9 Months Ended
Sep. 30, 2017
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Results for the quarters ended September 30, 2017 and 2016 are as follows:
 
Net Sales
 
Operating Profits
 
Operating Profit Margins
(Dollars in millions)
2017
 
2016
 
2017
 
2016
 
2017
 
2016
Otis
$
3,156

 
$
3,018

 
$
555

 
$
584

 
17.6
%
 
19.4
%
UTC Climate, Controls & Security
4,688

 
4,415

 
828

 
801

 
17.7
%
 
18.1
%
Pratt & Whitney
3,871

 
3,501

 
229

 
340

 
5.9
%
 
9.7
%
UTC Aerospace Systems
3,637

 
3,646

 
616

 
600

 
16.9
%
 
16.5
%
Total segments
15,352

 
14,580

 
2,228

 
2,325

 
14.5
%
 
15.9
%
Eliminations and other
(290
)
 
(226
)
 
40

 
18

 
 
 
 
General corporate expenses
—

 
—

 
(105
)
 
(92
)
 
 
 
 
Consolidated
$
15,062

 
$
14,354

 
$
2,163

 
$
2,251

 
14.4
%
 
15.7
%

Results for the nine months ended September 30, 2017 and 2016 are as follows:
 
Net Sales
 
Operating Profits
 
Operating Profit Margins
(Dollars in millions)
2017
 
2016
 
2017
 
2016
 
2017
 
2016
Otis
$
9,091

 
$
8,830

 
$
1,551

 
$
1,631

 
17.1
%
 
18.5
%
UTC Climate, Controls & Security
13,292

 
12,602

 
2,664

 
2,279

 
20.0
%
 
18.1
%
Pratt & Whitney
11,699

 
10,902

 
1,024

 
1,136

 
8.8
%
 
10.4
%
UTC Aerospace Systems
10,888

 
10,867

 
1,771

 
1,720

 
16.3
%
 
15.8
%
Total segments
44,970

 
43,201

 
7,010

 
6,766

 
15.6
%
 
15.7
%
Eliminations and other
(813
)
 
(616
)
 
25

 
47

 
 
 
 
General corporate expenses
—

 
—

 
(315
)
 
(280
)
 
 
 
 
Consolidated
$
44,157

 
$
42,585

 
$
6,720

 
$
6,533

 
15.2
%
 
15.3
%