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Provisions (Tables)
 12 Months Ended
Dec. 31, 2017
Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]  
Disclosure of Changes in Provisions
The following chart details the changes in our provisions for the year indicated:
 
Restructuring
 
Warranty
 
Legal (i)
 
Other(ii)
 
Total
Balance — December 31, 2016
$
6.6

 
$
19.6

 
$
3.0

 
$
5.5

 
$
34.7

Provisions
25.4

 
12.6

 
0.8

 
1.3

 
40.1

Reversal of prior year provisions(iii)
(0.3
)
 
(4.6
)
 
(0.2
)
 
—

 
(5.1
)
Payments/usage
(19.0
)
 
(6.5
)
 
(1.1
)
 
—

 
(26.6
)
Accretion, foreign exchange and other
—

 
0.3

 
—

 
—

 
0.3

Balance — December 31, 2017
$
12.7

 
$
21.4

 
$
2.5

 
$
6.8

 
$
43.4

Current
$
12.7

 
$
11.4

 
$
2.5

 
$
—

 
$
26.6

Non-current(iv)   
—

 
10.0

 
—

 
6.8

 
16.8

December 31, 2017
$
12.7

 
$
21.4

 
$
2.5

 
$
6.8

 
$
43.4


(i)
Legal represents our provisions recorded for various legal actions based on our estimates of the likely outcomes.
(ii)
Other represents our asset retirement obligations of $6.8, relating to sites that we currently lease.
(iii)
During 2017, we reversed prior year warranty provisions as a result of expired warranties and changes in estimated costs based on historical experience.
(iv)
Non-current balances are included in provisions and other non-current liabilities on our consolidated balance sheet.