Stockholders' Equity - Schedule of Dividends Paid (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended									3 Months Ended		9 Months Ended
	Sep. 26, 2014		Aug. 04, 2014	Jun. 27, 2014		May 28, 2014	Mar. 28, 2014		Feb. 25, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Equity [Abstract]
Dividends declared per common share			$ 0.75			$ 0.75			$ 0.75	$ 0.75	$ 0.75	$ 2.25		$ 2.25
Payments of dividends	$ 14.2	[1]		$ 14.3	[1]		$ 14.3	[1]				$ 42.8	[1]

[1] Includes dividend equivalents paid on restricted stock units