XML 41 R30.htm IDEA: XBRL DOCUMENT v3.10.0.1
Other Income, Net (Tables)
 9 Months Ended
Sep. 30, 2018
Other Income and Expenses [Abstract]  
Other Income, Net
Other expense, net consisted of the following:
 
 
Three Months Ended Sept. 30
 
Nine Months Ended Sept. 30
(Millions of Dollars)
 
2018
 
2017
 
2018
 
2017
Interest income
 
$
4

 
$
6

 
$
11

 
$
12

Other nonoperating income
 
—

 
—

 
2

 
5

Insurance policy expense
 
—

 
(1
)
 
(1
)
 
(3
)
Benefits non-service costs
 
(11
)
 
(6
)
 
(20
)
 
(18
)
Other expense, net
 
$
(7
)
 
$
(1
)
 
$
(8
)
 
$
(4
)