Debt (Tables)

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Carrying Amounts and Estimated Fair Value of Long-Term Debt

Carrying amounts and the related estimated fair values of the Company’s long-term debt financial instruments not measured at fair value on a recurring basis at June 30, 2019 and December 30, 2018 are presented in the following table:

	As of June 30, 2019						As of December 30, 2018
$ in millions	Principal		Carrying Amount		Fair Value		Principal		Carrying Amount		Fair Value
Total long-term debt including current portion	$	300.0	$	294.6	$	322.5	$	300.0	$	294.2	$	305.3