XML 53 R36.htm IDEA: XBRL DOCUMENT v3.10.0.1
Revisions in Estimates (Tables)
 12 Months Ended
Dec. 31, 2018
Transportation [Member]  
Change In Accounting Estimate [Line Items]  
Schedule of Projects with Decreases Summarized The projects with decreases are summarized as follows (dollars in millions):

Years Ended December 31,

 

2018

 

 

2017

 

 

2016

 

Number of projects with downward estimate changes

 

 

5

 

 

 

6

 

 

 

4

 

Range of reduction in gross profit from each project, net

$

5.3 - 32.0

 

$

6.1 - 17.2

 

$

6.0 - 13.6

 

Decrease to project profitability

$

 

86.5

 

$

 

67.2

 

$

 

39.4