Income Taxes Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Taxes [Abstract]
Effective Income Tax Rate, Continuing Operations	36.60%	35.30%	40.80%	36.50%
Federal Statutory Tax Rate			35.00%
Unrecognized Tax Benefits	$ 178.3		$ 178.3
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 55.8		55.8
Unrecognized tax benefits, reduction of accrued interest			$ 4.1