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Business Segment Information (Tables)
 9 Months Ended
Sep. 30, 2019
Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Summary of Operations by Reportable Segments
A summary of operations by reportable segment for the three and nine months ended September 30 was as follows:
 
Three months ended

Nine months ended
In millions
2019
 
2018
 
2019
 
2018
Net revenues
 
 
 
 
 
 
 
Climate
$
3,470.9

 
$
3,238.7

 
$
9,892.2

 
$
9,342.3

Industrial
873.4

 
792.2

 
2,555.8

 
2,430.8

Total
$
4,344.3

 
$
4,030.9

 
$
12,448.0

 
$
11,773.1

Segment operating income
 
 
 
 
 
 
 
Climate
$
583.5

 
$
535.6

 
$
1,510.1

 
$
1,378.7

Industrial
116.3

 
110.7

 
310.3

 
291.8

Unallocated corporate expense
(76.6
)
 
(59.3
)
 
(228.2
)
 
(199.8
)
Operating income
$
623.2

 
$
587.0

 
$
1,592.2

 
$
1,470.7