Income Tax Unrecognized Tax Benefit (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 31, 2014 Minimum Forecast	Dec. 31, 2014 Maximum Forecast
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 75.5	$ 70.7	$ 84.9
Additions for tax positions related to the current year	3.7	9.9	9.6
Additions for tax positions of prior years	59.2	8.6	4.3
Reductions for tax positions of prior years	(3.2)	(0.1)	(0.1)
Settlements	(2.6)	(0.9)	(1.5)	(19.0)	(24.0)
Release due to statute expiration and legislative changes	(24.9)	(14.4)	(25.6)
Foreign currency adjustment	(3.5)	1.7	(0.9)
Balance at end of year	$ 104.2	$ 75.5	$ 70.7