Income Taxes (Tax Net Operating Loss (Tax Effected) And Credit Carryforwards) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 30, 2011
Operating Loss Carryforwards [Line Items]
Tax net operating loss (tax effected) and credit carryforwards	179.5
U.S. Net Operating Loss And Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax net operating loss (tax effected) and credit carryforwards	121.2
U.S. Capital Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax net operating loss (tax effected) and credit carryforwards	9.7
State Net Operating Loss And Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax net operating loss (tax effected) and credit carryforwards	18.7
State Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax net operating loss (tax effected) and credit carryforwards	12.6
Foreign Net Operating Loss And Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax net operating loss (tax effected) and credit carryforwards	13.9
Foreign Net Operating Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax net operating loss (tax effected) and credit carryforwards	3.4
Maximum [Member] | U.S. Net Operating Loss And Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Years of expiration	2031
Maximum [Member] | U.S. Capital Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Years of expiration	2016
Maximum [Member] | State Net Operating Loss And Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Years of expiration	2031
Maximum [Member] | Foreign Net Operating Loss And Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Years of expiration	2030
Minimum [Member] | U.S. Net Operating Loss And Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Years of expiration	2016
Minimum [Member] | U.S. Capital Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Years of expiration	2012
Minimum [Member] | State Net Operating Loss And Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Years of expiration	2012
Minimum [Member] | Foreign Net Operating Loss And Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Years of expiration	2012