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Discontinued Operations (Tables)
 12 Months Ended
Dec. 31, 2019
Discontinued Operations [Abstract]  
Summarized Financial Information For Discontinued Operations Text Block [Table Text Block] The components of Discontinued operations, net of tax for the years ended December 31 are as follows:
In millions
 
2019
 
2018
 
2017
Pre-tax earnings (loss) from discontinued operations
 
$
54.8

 
$
(85.5
)
 
$
(34.0
)
Tax benefit (expense)
 
(14.2
)
 
64.0

 
8.6

Discontinued operations, net of tax
 
$
40.6

 
$
(21.5
)
 
$
(25.4
)