Taxes on Income (Effective Tax Rate and Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Statutory Federal Tax Rate	35.00%	35.00%	35.00%
Foreign tax differential	(2.40%)	(3.20%)	(3.50%)
State and local income taxes, net of federal income tax benefit	4.50%	2.90%	4.00%
Change in state statutory rates, net of federal income tax benefit	(0.10%)	(1.00%)	0.60%
Federal and foreign permanent differences	4.90%	2.30%	0.50%
Withholding taxes	1.70%	1.70%	2.10%
Uncertain tax positions	(0.50%)	(0.60%)	(0.90%)
Change in valuation allowance	5.10%	8.00%	0.60%
All other items, net	(1.50%)	0.00%	0.20%
Effective Tax Rate (as a percent)	46.70%	45.10%	38.60%
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at the beginning of the period	$ 18.7	$ 41.4	$ 46.3
Decrease attributable to tax positions taken during prior periods	6.7	26.0	9.5
Increase attributable to tax positions taken during the current year	2.6	3.3	4.6
Decrease attributable to settlements with taxing authorities	(3.6)	0	0
Balance at the end of the period	$ 11.0	$ 18.7	$ 41.4