XML 33 R31.htm IDEA: XBRL DOCUMENT v3.2.0.727
Accounting for Asset Retirement Obligations (Tables)
 6 Months Ended
Jun. 28, 2015
Accounting for Asset Retirement Obligations [Abstract]  
Reconciliation of asset retirement obligations
The following is a reconciliation of asset retirement obligations as of June 28, 2015:
 
  
(millions of dollars)
 
Asset retirement liability, December 31, 2014
 
$
23.0
 
Accretion expense
  
1.4
 
Reversals
  
(0.2
)
Payments
  
(0.7
)
Foreign currency translation
  
(0.6
)
Asset retirement liability,  June 28, 2015
 
$
22.9