Accounts Receivable

12 Months Ended

Dec. 28, 2014

Receivables [Abstract]

Accounts Receivable

Accounts Receivable

Accounts receivable are summarized as follows (in millions):

	Balance at year-end
	2014			2013
Commercial and other receivables	$	357.5		$	329.7
U.S. Government and prime contractors contract receivables:
Billed receivables	17.3			25.7
Unbilled receivables	33.7			27.8
	408.5			383.2
Reserve for doubtful accounts	(7.8		)	(5.2		)
Total accounts receivable, net	$	400.7		$	378.0

The billed contract receivables from the U.S. Government and prime contractors contain $12.6 million and $18.6 million at December 28, 2014, and December 29, 2013, respectively, due to long-term contracts. The unbilled contract receivables from the U.S. Government and prime contractors contain $29.4 million and $23.2 million at December 28, 2014, and December 29, 2013, respectively, due to long-term contracts.

Unbilled contract receivables represent accumulated costs and profits earned but not yet billed to customers. The Company believes that substantially all such amounts will be billed and collected within one year.