Fair Value Measurements (Tables)

12 Months Ended

Dec. 29, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements on a Recurring Basis

The following tables present assets measured at fair value on a recurring basis as of year-end 2019 and 2018 in the consolidated balance sheet by fair value hierarchy level, as described below. 

Level 1 measurements consist of unadjusted quoted prices in active markets for identical assets or liabilities.  Level 2 measurements include quoted prices in markets that are not active or model inputs that are observable either directly or indirectly for substantially the full term of the asset or liability. Level 3 measurements include significant unobservable inputs. 

	Fair Value Measurements on a Recurring Basis As of Year-End 2019
Description	Total		Level 1		Level 2		Level 3
	(In millions of dollars)
Money market funds	$	4.9	$	4.9	$	—	$	—
Investment in Persol Holdings	173.2		173.2		—		—
Total assets at fair value	$	178.1	$	178.1	$	—	$	—

	Fair Value Measurements on a Recurring Basis As of Year-End 2018
Description	Total		Level 1		Level 2		Level 3
	(In millions of dollars)
Money market funds	$	4.6	$	4.6	$	—	$	—
Investment in Persol Holdings	135.1		135.1		—		—
Total assets at fair value	$	139.7	$	139.7	$	—	$	—