Accounts Receivable and Unbilled Receivables (Tables)

12 Months Ended

Dec. 29, 2019

Receivables [Abstract]

Accounts Receivable

Accounts Receivable and Unbilled Receivables (in millions):	Balance at year-end
	2019		2018
Commercial and other billed receivables	$	440.1	$	381.9
U.S. Government and prime contractors billed receivables	30.5		41.3
	470.6		423.2
Allowance for doubtful accounts	(10.2)		(6.7)
Account receivable, net	$	460.4	$	416.5
Commercial and other unbilled receivables	$	143.9	$	96.4
U.S. Government and prime contractors unbilled receivables	56.5		48.9
Unbilled receivables, net	$	200.4	$	145.3