Employee Benefit Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Pension and Other Postretirement Benefit Expense	$ 31,400,000	$ 0	$ 0
Discontinued Operations [Member]
Components of net periodic benefit cost
Total net periodic benefit cost	$ 0
United States Postretirement Benefit Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage Of Projected Benefit Obligation By Pension Plans	88.00%
Pension Benefits [Member]
Components of net periodic benefit cost
Service cost	$ 4,400,000	4,800,000	4,200,000
Interest cost	15,300,000	17,200,000	17,700,000
Expected return on plan assets	(21,500,000)	(21,400,000)	(22,700,000)
Amortization of prior service cost	300,000	200,000	300,000
Amortization of net loss	7,600,000	9,500,000	6,600,000
Settlements or curtailments	31,600,000	400,000	400,000
Total net periodic benefit cost	37,700,000	10,700,000	6,500,000
Other Benefits [Member]
Components of net periodic benefit cost
Service cost	0	0	0
Interest cost	100,000	200,000	200,000
Expected return on plan assets	0	0	0
Amortization of prior service cost	(3,000,000)	(3,100,000)	(3,100,000)
Amortization of net loss	1,400,000	1,500,000	1,500,000
Settlements or curtailments	0	0	0
Total net periodic benefit cost	$ (1,500,000)	$ (1,400,000)	$ (1,400,000)