Long-Lived Assets by Country (Detail) (USD $) In Millions, unless otherwise specified	Dec. 28, 2012	Dec. 30, 2011
Schedule Of Long Lived Assets [Line Items]
Long-lived assets	$ 390.7	$ 486.7
UNITED STATES
Schedule Of Long Lived Assets [Line Items]
Long-lived assets	312.3	407.3
FINLAND
Schedule Of Long Lived Assets [Line Items]
Long-lived assets	57.9	55.8
All Other Countries
Schedule Of Long Lived Assets [Line Items]
Long-lived assets	$ 20.5	$ 23.6