Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2016	[1]	Dec. 28, 2014	Dec. 29, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 53.8		$ 23.7	$ 58.9
Other comprehensive income, net of tax:
Foreign currency translation adjustments, net of tax expense of $0.4 million and $0.6 million and tax benefit of $0.0 million, respectively	(19.4)		(20.2)	(6.7)
Less: Reclassification adjustments included in net earnings	(0.2)		(0.9)	(0.1)
Foreign currency translation adjustments	(19.6)		(21.1)	(6.8)
Unrealized gains on investment, net of tax expense of $15.8 million, $8.2 million and $16.2 million, respectively	28.6		11.5	31.2
Pension liability adjustments, net of tax expense of $0.0 million, $0.0 million and $0.2 million, respectively	0.5		(0.8)	1.4
Less: Reclassification adjustments included in net earnings	0.1		0.1	0.2
Pension liability adjustments	0.6		(0.7)	1.6
Other comprehensive income (loss)	9.6		(10.3)	26.0
Comprehensive Income	$ 63.4		$ 13.4	$ 84.9

[1] Fiscal year included 53 weeks.