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Receivables
 12 Months Ended
Dec. 31, 2017
Receivables [Abstract]  
Receivables

5. Receivables

 

DECEMBER 31

 

2017

 

 

2016

 

 

2015

 

Receivables

 

$

2,165.7

 

 

$

1,967.9

 

 

$

1,793.7

 

Allowance at beginning of year

 

$

(7.8

)

 

$

(6.1

)

 

$

(6.9

)

Reversal of allowance

 

 

1.3

 

 

 

0.9

 

 

 

1.3

 

Addition to allowance

 

 

(2.8

)

 

 

(3.7

)

 

 

(1.9

)

Write-off against allowance

 

 

1.5

 

 

 

0.5

 

 

 

0.8

 

Translation difference

 

 

(0.7

)

 

 

0.6

 

 

 

0.6

 

Allowance at end of year

 

$

(8.5

)

 

$

(7.8

)

 

$

(6.1

)

Total receivables, net of allowance

 

$

2,157.2

 

 

$

1,960.1

 

 

$

1,787.6