Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended							12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Amortization period for gains and losses, period 1									3 years
Amortization period for gains and losses, period 2									5 years
Pension settlement charge		$ (1.1)	$ (6.2)	$ 0.0	$ 0.0				$ 0.0	$ (7.3)	$ (9.5)
Postemployment benefits liability		$ 18.2							$ 15.0	$ 18.2
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average discount rate		3.92%							2.81%	3.92%
Rate of return on assets									6.65%
Pension Benefits U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Pension Plan, Liabilities, Noncurrent									$ 509.9	$ 0.0
Defined Benefit Plan, Divestitures, Plan Assets									355.9	0.0
Net amount recognized	[1]	$ (198.5)							(36.2)	(198.5)
Qualified pension plans, benefit obligations		606.8				$ 705.2			87.6	606.8	705.2
Qualified pension plans, plan assets		408.3				506.5			51.4	408.3	506.5
Net periodic benefit cost	[2]								15.4	$ 76.4	$ 88.9
Pension settlement charge		$ 4.1	$ 23.8			7.5	$ 5.4	$ 23.5
Net actuarial loss									5.0
Expected prior service credit									$ (0.1)
Weighted average discount rate		4.19%							3.67%	4.19%
Rate of return on assets									7.00%	7.25%	7.50%
Pension Benefits U.S. Plans [Member] | Corporate and Government Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
assumptions used calculating net periodic benefit allocation, debt securities allocation									70.00%
Expected long term rate of return on debt securities, minimum									3.00%
Expected long term rate of return on debt securities, maximum									4.00%
Pension Benefits U.S. Plans [Member] | Equity Securities and High Yield Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit, Equity Securities Allocation									30.00%
Expected long term rate of return on equity securities, minimum									6.00%
Expected long term rate of return on equity securities, maximum									8.00%
Pension Benefits Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Pension Plan, Liabilities, Noncurrent									$ 0.0	$ 0.0
Defined Benefit Plan, Divestitures, Plan Assets									0.0	0.0
Net amount recognized	[1]	$ (91.4)							(39.2)	(91.4)
Qualified pension plans, benefit obligations		667.7				777.6			652.9	667.7	$ 777.6
Qualified pension plans, plan assets		$ 576.3				607.9			613.7	576.3	607.9
Net periodic benefit cost	[2]								0.5	$ 1.4	$ 9.7
Net actuarial loss									7.3
Expected prior service credit									$ (0.1)
Weighted average discount rate		3.69%							2.69%	3.69%
Rate of return on assets									6.40%	6.55%	6.33%
U.S. Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Qualified pension plans, benefit obligations		$ 578.4							$ 75.5	$ 578.4
Qualified pension plans, plan assets		408.3							51.4	408.3
UK Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Qualified pension plans, benefit obligations		456.1							448.6	456.1
Qualified pension plans, plan assets		462.0							$ 502.0	462.0
Rate of return on assets									6.65%
UK Pension Plan [Member] | Equity Securities, Emerging Market Debt and High Yield Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit, Equity Securities Allocation									20.00%
Expected long term rate of return on equity securities, minimum									6.00%
Expected long term rate of return on equity securities, maximum									9.00%
UK Pension Plan [Member] | Corporate and Government Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
assumptions used calculating net periodic benefit allocation, debt securities allocation									80.00%
Expected long term rate of return on debt securities, minimum									2.00%
Expected long term rate of return on debt securities, maximum									4.00%
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Pension Plan, Liabilities, Noncurrent									$ 50.1	0.0
Defined Benefit Plan, Divestitures, Plan Assets									0.0	0.0
Net amount recognized	[1]	(76.6)							(26.0)	(76.6)
Qualified pension plans, benefit obligations		76.6				93.4			26.0	76.6	$ 93.4
Qualified pension plans, plan assets		$ 0.0				$ 0.0			0.0	0.0	0.0
Net periodic benefit cost	[2]								0.8	$ 2.2	(1.0)
Net actuarial loss									0.1
Expected prior service credit									$ (0.3)
Weighted average discount rate		4.50%							5.33%	4.50%
Minimum [Member] | U.S. Pension and Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contributions related to continuing operations									$ 10.0
Minimum [Member] | International Pension and Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contributions related to continuing operations									20.0
Maximum [Member] | U.S. Pension and Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contributions related to continuing operations									15.0
Maximum [Member] | International Pension and Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contributions related to continuing operations									25.0
Discontinued Operations, Disposed of by Sale [Member] | Pension Benefits U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost	[2]								4.4	$ 53.7	62.6
Current Assets of Discontinued Operations [Member] | U.S. Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Qualified pension plans, benefit obligations		$ 507.6								507.6
Qualified pension plans, plan assets		374.8								374.8
Discontinued Operations, Disposed of by Sale [Member]
Defined Benefit Plan Disclosure [Line Items]
Postemployment benefits liability		6.0								6.0
Discontinued Operations, Disposed of by Sale [Member] | Pension Benefits U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net amount recognized	[1]	145.7								145.7
Discontinued Operations, Disposed of by Sale [Member] | Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net amount recognized	[1]	$ 53.6								53.6
Discontinued Operations [Member] | U.S. Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Pension Plan, Liabilities, Noncurrent									499.6
Defined Benefit Plan, Divestitures, Plan Assets									355.9
Discontinued Operations [Member] | United States Postretirement Benefit Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Pension Plan, Liabilities, Noncurrent									$ 60.4
Personal Savings Account Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Maximum employee contribution to plan									25.00%
Maximum contribution for eligible participants									3.00%
Employer match toward contributions, fifty cents for dollar, minimum									4.00%
Employer match toward contributions, fifty cents for dollar, maximum									6.00%
Employer contribution									$ 3.8	$ 4.0	$ 5.0
Retirement Savings Account Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer match toward contributions, fifty cents for dollar, minimum									3.00%
Employer match toward contributions, fifty cents for dollar, maximum									6.00%
Vesting period									3 years

[1] Includes $145.7 of the U.S. pension plans net liability and $53.6 of the postretirement benefit plans net liability (related to the U.S.) at December 31, 2015, which are included in discontinued operations.

[2] Includes $4.4, $53.7 and $62.6 of the U.S. pension plans in 2016, 2015 and 2014, respectively, and immaterial amounts of the postretirement benefit plans (related to the U.S.) in 2016, 2015 and 2014, which are included in discontinued operations.