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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2018
Fair Value Disclosures [Abstract]  
Fair Value Measurements
The following table presents our fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis (in millions):
 
December 31, 2018
 
December 31, 2017
 
Carrying amount
 
Fair value
 
Carrying amount
Fair value
 
 
Level 1
 
Level 2
 
Level 3
 
Level 1
 
Level 2
 
Level 3
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash and cash equivalents (Note 2)
$
20.3

 
$
20.3

 
$
—

 
$
—

 
$
16.2

$
16.2

 
$
—

 
$
—

Interest rate swaps (Note 11)
6.7

 
—

 
6.7

 
—

 
6.7

—

 
6.7

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities:

 

 

 

 


 

 

Interest rate swaps (Note 11)
4.5

 
—

 
4.5

 
—

 
—

—

 
—

 
—