Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 29, 2015	Mar. 30, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 3.7us-gaap_NetIncomeLoss	$ 2.5us-gaap_NetIncomeLoss
Other comprehensive income, net of tax:
Foreign currency translation adjustments, net of tax benefit of $0.3 million in 2015 and expense of $0.2 million in 2014	(8.4)	0.4
Less: Reclassification adjustments included in net earnings	(0.2)	0
Foreign currency translation adjustments	(8.6)	0.4
Unrealized gains (losses) on investment, net of tax expense of $1.7 million in 2015 and benefit of $0.3 million in 2014	3.1	(0.1)
Other comprehensive (loss) income	(5.5)	0.3
Comprehensive (Loss) Income	$ (1.8)us-gaap_ComprehensiveIncomeNetOfTax	$ 2.8us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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