Fair Value Of Assets And Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value Measurements on a Recurring Basis

The carrying amounts and estimated fair values by input level of the Company's financial instruments are as follows:

	December 31, 2018
(in millions)	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Financial assets:
Restricted cash	$	40.0	$	40.0	$	40.0	$	—	$	—
Financial liabilities:
Term Loan B	391.3		396.0		—		396.0		—
2028 Senior Notes	493.0		452.4		—		452.4		—

	December 31, 2017
(in millions)	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Financial assets:
Restricted cash	$	31.2	$	31.2	$	31.2	$	—	$	—
Financial liabilities:
Term Loan B	394.9		400.0		—		400.0		—
2028 Senior Notes	492.3		496.8		—		496.8		—
Revolver	239.0		239.0		—		239.0		—
Swing line of credit	3.0		3.0		—		3.0		—