Employee Benefit Plans (Components Of Net Pension (Expense) Income) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Service cost		$ (4.3)	$ (3.0)	$ (3.2)
Interest cost		(12.6)	(12.9)	(11.9)
Expected return on plan assets		16.5	15.9	15.2
Amortization of prior service cost		0.0	(0.3)	(0.2)
Recognized net actuarial loss		(5.2)	(2.8)	(6.4)
Settlements	$ (12.1)	(12.1)	0.0	0.0
Net pension (expense) income		$ (17.7)	$ (3.1)	$ (6.5)
Weighted average assumptions for pension costs:
Discount rate used in net pension costs		3.80%	4.60%	3.80%
Rate of compensation increase used in pension costs		3.50%	3.80%	3.80%
Expected return on plan assets		6.60%	6.70%	6.60%
Weighted average assumptions for benefit obligation:
Discount rate used in benefit obligation		4.10%	3.80%	4.60%
Rate of compensation increase used in benefit obligation		3.50%	3.50%	3.80%