Borrowing Arrangements (Fair Value Adjustment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]
Unamortized fair value adjustment related to long-term debt	$ 69.6
Aggregate amortization of the fair value adjustment	(33.5)
Estimated aggregate amortization of fair value adjustment related to long-term debt (reduction of interest expense) for each of the next five years:
2014	25.4
2015	15.7
2016	9.6
2017	5.6
2018	$ 2.0