Pension Plans and Other Postretirement Benefit Plans (Details 2) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in Projected Benefit Obligation (PBO):
Benefit obligation at beginning of year			$ 2,027.7
Benefit obligation at end of year			1,900.2	$ 2,027.7
Amounts recognized in the Consolidated Balance Sheets consist of:
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent			26.1	44.1
Current liabilities			(15.3)	(15.6)
Net Periodic Benefit Cost
Defined Benefit Pension Mark to Market Adjustment			46.8	128.3	$ (50.6)
Gain on termination of postretirement plans		$ (4.5)	(4.5)	(39.5)	0.0
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
Net prior service credit			(5.7)	(13.6)	(1.7)
Amortization of prior service cost (credit)			3.1	1.7	(0.7)
Prior service cost that will be amortized from accumulated other comprehensive loss into net periodic benefit cost over the next fiscal year			2.6
U.S. qualified pension plans
Change in Projected Benefit Obligation (PBO):
Benefit obligation at beginning of year			1,437.3	1,326.8
Service cost			25.7	23.5	25.2
Interest cost			55.1	60.0	51.9
Amendments			(3.6)
Actuarial (gain) loss			(63.0)	131.4
Benefits paid			(87.0)	(104.4)	(79.2)
Benefit obligation at end of year			1,364.5	1,437.3	1,326.8
Change in Plan Assets:
Fair value of plan assets at beginning of year			1,262.6	1,145.2
Actual return on plan assets			(34.6)	112.1
Employer contributions			7.3	109.7
Benefits paid			(87.0)	(104.4)	(79.2)
Fair value of plan assets at end of year			1,148.3	1,262.6	1,145.2
Net funded status			(216.2)	(174.7)
Amounts recognized in the Consolidated Balance Sheets consist of:
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent				0.0
Current liabilities			(7.1)	(7.1)
Noncurrent liabilities			(209.1)	(167.6)
Net amount recognized			(216.2)	(174.7)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Prior service cost (credit)			(3.1)	0.8
Net amount recognized			$ (3.1)	$ 0.8
Weighted Average Assumptions Used to Determine Benefit Obligations as of the period
Discount rate			4.31%	3.95%
Rate of compensation increase			4.70%	4.70%
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended
Discount rate			3.95%	4.76%
Expected return on plan assets			5.75%	6.00%
Rate of compensation increase			4.70%	4.70%
Net Periodic Benefit Cost
Service cost			$ 25.7	$ 23.5	25.2
Interest cost			55.1	60.0	51.9
Expected return on plan assets			(70.4)	(69.9)	(68.0)
Amortization of prior service cost (credit)			0.3	0.7	0.7
Amortization of net deferred actuarial loss				0.0	0.0
Defined Benefit Pension Mark to Market Adjustment			42.0	89.2	(65.8)
Gain on termination of postretirement plans			0.0	0.0	0.0
Net periodic benefit cost			52.7	103.5	(56.0)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
Net deferred actuarial (gain) loss				0.0	0.0
Net prior service credit			(3.6)
Amortization of prior service cost (credit)			(0.3)	(0.7)	(0.7)
Amortization of net deferred actuarial loss				0.0	0.0
Loss on termination of postretirement plans				0.0	0.0
Total recognized in other comprehensive (income) loss			(3.9)	(0.7)	(0.7)
Total recognized in net periodic benefit cost and other comprehensive (income) loss			48.8	102.8	(56.7)
Non-U.S. pension plans
Pension plans and other postretirement benefit plans
Defined Benefit Plan, Settlements, Plan Assets			1.5	0.0
Change in Projected Benefit Obligation (PBO):
Benefit obligation at beginning of year			590.4	546.4
Service cost			11.7	10.7	11.1
Interest cost			16.1	22.2	20.6
Plan participants' contributions			0.5	0.6
Amendments				0.0
Defined Benefit Plan Curtailments and Settlements			1.0	0.0
Actuarial (gain) loss			(11.4)	92.4
Benefits paid			(20.7)	(25.8)	(22.1)
Currency exchange translation adjustments			(49.9)	(56.1)
Benefit obligation at end of year			535.7	590.4	546.4
Change in Plan Assets:
Fair value of plan assets at beginning of year			336.1	306.5
Actual return on plan assets			2.9	59.1
Employer contributions			10.5	18.1
Plan participants' contributions			0.5	0.6
Benefits paid			(20.7)	(25.8)	(22.1)
Currency exchange translation adjustments			(21.6)	(22.4)
Fair value of plan assets at end of year			306.2	336.1	306.5
Net funded status			(229.5)	(254.3)
Amounts recognized in the Consolidated Balance Sheets consist of:
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent			26.1	44.1
Current liabilities			(8.2)	(8.5)
Noncurrent liabilities			(247.4)	(289.9)
Net amount recognized			(229.5)	(254.3)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Prior service cost (credit)			(0.3)	(0.3)
Net amount recognized			$ (0.3)	$ (0.3)
Weighted Average Assumptions Used to Determine Benefit Obligations as of the period
Discount rate			3.00%	2.97%
Rate of compensation increase			3.35%	3.24%
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended
Discount rate			2.97%	4.25%
Expected return on plan assets			4.11%	5.06%
Rate of compensation increase			3.24%	3.41%
Net Periodic Benefit Cost
Service cost			$ 11.7	$ 10.7	11.1
Interest cost			16.1	22.2	20.6
Expected return on plan assets			(13.0)	(15.2)	(14.0)
Amortization of prior service cost (credit)					0.0
Amortization of net deferred actuarial loss					0.0
Defined Benefit Pension Mark to Market Adjustment			(0.1)	45.4	11.0
Gain on termination of postretirement plans			0.0	0.0	0.0
Net curtailment and settlement loss				0.0	(0.1)
Net periodic benefit cost			14.7	63.1	28.6
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
Net deferred actuarial (gain) loss				0.0	0.0
Net prior service credit				0.0
Amortization of prior service cost (credit)					0.0
Amortization of net deferred actuarial loss				0.0	0.0
Loss on termination of postretirement plans				0.0	0.0
Total recognized in other comprehensive (income) loss				0.0	0.0
Total recognized in net periodic benefit cost and other comprehensive (income) loss			14.7	63.1	28.6
Non-U.S. pension plans | Overfunded pension plans
Change in Projected Benefit Obligation (PBO):
Benefit obligation at beginning of year	[1]		245.8
Benefits paid	[1]		(11.3)	(12.3)
Benefit obligation at end of year	[1]		240.3	245.8
Change in Plan Assets:
Fair value of plan assets at beginning of year	[1]		289.9
Benefits paid	[1]		(11.3)	(12.3)
Fair value of plan assets at end of year	[1]		266.4	289.9
Net funded status	[1]		$ 26.1	44.1
Non-U.S. pension plans | United Kingdom
Weighted Average Assumptions Used to Determine Benefit Obligations as of the period
Discount rate			(3.00%)
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended
Expected return on plan assets			3.75%
Non-U.S. pension plans | Canada
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended
Expected return on plan assets			5.25%
Pension Plans
Pension plans and other postretirement benefit plans
Defined Benefit Plan, Settlements, Plan Assets			$ 1.5	0.0
Change in Projected Benefit Obligation (PBO):
Benefit obligation at beginning of year			2,027.7	1,873.2
Service cost			37.4	34.2
Interest cost			71.2	82.2
Plan participants' contributions			0.5	0.6
Amendments			(3.6)	0.0
Defined Benefit Plan Curtailments and Settlements			1.0	0.0
Actuarial (gain) loss			(74.4)	223.8
Benefits paid			(107.7)	(130.2)
Currency exchange translation adjustments			(49.9)	(56.1)
Benefit obligation at end of year			1,900.2	2,027.7	1,873.2
Change in Plan Assets:
Fair value of plan assets at beginning of year			1,598.7	1,451.7
Actual return on plan assets			(31.7)	171.2
Employer contributions			17.8	127.8
Plan participants' contributions			0.5	0.6
Benefits paid			(107.7)	(130.2)
Currency exchange translation adjustments			(21.6)	(22.4)
Fair value of plan assets at end of year			1,454.5	1,598.7	1,451.7
Net funded status			(445.7)	(429.0)
Amounts recognized in the Consolidated Balance Sheets consist of:
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent			26.1	44.1
Current liabilities			(15.3)	(15.6)
Noncurrent liabilities			(456.5)	(457.5)
Net amount recognized			(445.7)	(429.0)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Prior service cost (credit)			(3.4)	0.5
Net amount recognized			(3.4)	0.5
Net Periodic Benefit Cost
Service cost			37.4	34.2
Interest cost			71.2	82.2
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
Prior service cost that will be amortized from accumulated other comprehensive loss into net periodic benefit cost over the next fiscal year			0.2
Postretirement Benefits Other Than Pensions
Change in Projected Benefit Obligation (PBO):
Benefit obligation at beginning of year			2.4	57.2
Service cost				0.1	0.2
Interest cost			0.1	1.1	2.2
Amendments			(2.1)	(51.5)
Actuarial (gain) loss			0.4	(1.0)
Medicare subsidy receipts			1.0	0.2	1.4
Benefits paid			(1.1)	(3.7)	(4.5)
Benefit obligation at end of year			0.7	2.4	57.2
Change in Plan Assets:
Fair value of plan assets at beginning of year			0.0	0.0
Employer contributions			0.1	3.5
Medicare subsidy receipts			1.0	0.2	1.4
Benefits paid			(1.1)	(3.7)	(4.5)
Fair value of plan assets at end of year			0.0	0.0	0.0
Net funded status			(0.7)	(2.4)
Amounts recognized in the Consolidated Balance Sheets consist of:
Current liabilities				(0.1)
Noncurrent liabilities			(0.7)	(2.3)
Net amount recognized			(0.7)	(2.4)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Accumulated actuarial loss (gain)			5.9	6.2
Prior service cost (credit)			(7.1)	(12.9)
Net amount recognized			$ (1.2)	$ (6.7)
Weighted Average Assumptions Used to Determine Benefit Obligations as of the period
Discount rate			4.40%	4.18%
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended
Discount rate			4.18%	4.26%
Net Periodic Benefit Cost
Service cost				$ 0.1	0.2
Interest cost			$ 0.1	1.1	2.2
Amortization of prior service cost (credit)			(3.4)	(2.4)	0.0
Amortization of net deferred actuarial loss			0.7		0.4
Defined Benefit Pension Mark to Market Adjustment					0.0
Gain on termination of postretirement plans			(4.5)	(39.5)	0.0
Net periodic benefit cost			(7.1)	(40.7)	2.8
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
Net deferred actuarial (gain) loss			0.4	(1.0)	(4.3)
Net prior service credit			(2.1)	(13.6)	(1.7)
Amortization of prior service cost (credit)			3.4	2.4	0.0
Amortization of net deferred actuarial loss			0.7	0.0	0.4
Loss on termination of postretirement plans			4.5	12.2	0.0
Total recognized in other comprehensive (income) loss			5.5	0.0	(6.4)
Total recognized in net periodic benefit cost and other comprehensive (income) loss			(1.6)	$ (40.7)	$ (3.6)
Defined Benefit Plan, Future Amortization of Gain (Loss)			(0.6)
Fair Value, Inputs, Level 3 [Member] | Non-U.S. pension plans
Change in Projected Benefit Obligation (PBO):
Currency exchange translation adjustments			(4.2)
Change in Plan Assets:
Actual return on plan assets			(1.2)
Fair value of plan assets at end of year			138.5
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
Defined Benefit Plan, Purchases, Sales, and Settlements			145.6
Defined Benefit Plan, Assets Transferred to (from) Plan			$ (1.7)

[1] (1)Plans intended to be advance-funded.