Pension Plans and Other Retirement Plans (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Change in Plan Assets:
Net funded status	$ (526.1)	$ (442.1)
Amounts recognized in the Consolidated Balance Sheets consist of:
Noncurrent assets	8.5	5.7
Net Periodic Benefit Cost
Annual mark-to-market adjustment (gain) loss	85.9	(15.2)	$ 51.1
Pension Plans
Change in Projected Benefit Obligation (PBO):
Benefit obligation at beginning of year	1,332.7	1,648.7
Service cost	24.3	28.7
Interest cost	43.7	45.9
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	0.0	(160.9)
Defined Benefit Plan, Benefit Obligation, Business Combination	0.0	0.6
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss), Change in Rates	202.3	(113.2)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) - Other	(6.6)	(1.3)
Benefits paid	(85.1)	(103.5)
Currency exchange translation adjustments	(4.3)	(12.3)
Benefit obligation at end of year	1,507.0	1,332.7	1,648.7
Change in Plan Assets:
Fair value of plan assets at beginning of year	890.6	1,131.3
Actual return on plan assets	158.7	(43.6)
Employer contributions	15.8	66.5
Settlements	0.0	(158.6)
Benefits paid	(85.1)	(103.5)
Currency exchange translation adjustments	0.9	(1.5)
Fair value of plan assets at end of year	980.9	890.6	1,131.3
Net funded status	(526.1)	(442.1)
Amounts recognized in the Consolidated Balance Sheets consist of:
Noncurrent assets	8.5	5.7
Current liabilities	(14.8)	(14.7)
Noncurrent liabilities	(519.8)	(433.1)
Net amount recognized	(526.1)	(442.1)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Prior service cost (credit)	(2.7)	(3.3)
Net amount recognized	(2.7)	(3.3)
Net Periodic Benefit Cost
Service cost	24.3	28.7
Interest cost	43.7	45.9
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	0.6
Enhanced Defined Contribution Plans [Member]
Pension plans and other postretirement benefit plans
Defined Contribution Plan, Cost	3.7	1.9	0.8
UNITED STATES
Pension plans and other postretirement benefit plans
Defined Contribution Plan, Cost	$ 13.9	12.6	11.5
Maximum percentage of employee compensation match by employer to defined contribution plan	6.00%
UNITED STATES | Pension Plans
Change in Projected Benefit Obligation (PBO):
Benefit obligation at beginning of year	$ 1,027.1	1,325.6
Service cost	15.7	19.2	17.1
Interest cost	38.3	40.9	42.0
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	0.0	(160.9)
Defined Benefit Plan, Benefit Obligation, Business Combination	0.0	0.0
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss), Change in Rates	144.1	(90.0)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) - Other	(10.7)	(12.6)
Benefits paid	(76.7)	(95.1)
Benefit obligation at end of year	1,137.8	1,027.1	1,325.6
Change in Plan Assets:
Fair value of plan assets at beginning of year	871.1	1,109.8
Actual return on plan assets	154.6	(41.9)
Employer contributions	6.7	56.9
Settlements	0.0	(158.6)
Benefits paid	(76.7)	(95.1)
Fair value of plan assets at end of year	955.7	871.1	1,109.8
Net funded status	(182.1)	(156.0)
Amounts recognized in the Consolidated Balance Sheets consist of:
Noncurrent assets	8.5	5.7
Current liabilities	(7.3)	(7.0)
Noncurrent liabilities	(183.3)	(154.7)
Net amount recognized	(182.1)	(156.0)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Prior service cost (credit)	(2.6)	(3.2)
Net amount recognized	$ (2.6)	$ (3.2)
Weighted Average Assumptions Used to Determine Benefit Obligations as of the period
Discount rate	3.13%	4.22%
Rate of compensation increase	4.50%	4.10%
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate, Service Cost	4.46%	3.77%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate, Interest Cost	3.86%	3.20%
Expected return on plan assets	5.75%	5.25%
Rate of compensation increase	4.10%	4.10%
Net Periodic Benefit Cost
Service cost	$ 15.7	$ 19.2	17.1
Interest cost	38.3	40.9	42.0
Expected return on plan assets	(48.2)	(57.2)	(57.5)
Amortization of prior service cost (credit)	(0.6)	(0.6)	(0.4)
Annual mark-to-market adjustment (gain) loss	26.8	(3.4)	36.0
Net curtailment and settlement gain	0.0	(2.3)	0.0
Net periodic benefit cost	32.0	(3.4)	37.2
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
Amortization of prior service cost (credit)	0.6	0.6	0.4
Total recognized in other comprehensive (income) loss	0.6	0.6	0.4
Total recognized in net periodic benefit cost and other comprehensive (income) loss	$ 32.6	(2.8)	37.6
UNITED STATES | Enhanced Defined Contribution Plans [Member]
Pension plans and other postretirement benefit plans
Maximum percentage of employee compensation match by employer to defined contribution plan	4.00%
Foreign Plan [Member] | Pension Plans
Change in Projected Benefit Obligation (PBO):
Benefit obligation at beginning of year	$ 305.6	323.1
Service cost	8.6	9.5	8.4
Interest cost	5.4	5.0	4.4
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	0.0	0.0
Defined Benefit Plan, Benefit Obligation, Business Combination	0.0	0.6
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss), Change in Rates	58.2	(23.2)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) - Other	4.1	11.3
Benefits paid	(8.4)	(8.4)
Currency exchange translation adjustments	(4.3)	(12.3)
Benefit obligation at end of year	369.2	305.6	323.1
Change in Plan Assets:
Fair value of plan assets at beginning of year	19.5	21.5
Actual return on plan assets	4.1	(1.7)
Employer contributions	9.1	9.6
Settlements	0.0	0.0
Benefits paid	(8.4)	(8.4)
Currency exchange translation adjustments	0.9	(1.5)
Fair value of plan assets at end of year	25.2	19.5	21.5
Net funded status	(344.0)	(286.1)
Amounts recognized in the Consolidated Balance Sheets consist of:
Noncurrent assets	0.0	0.0
Current liabilities	(7.5)	(7.7)
Noncurrent liabilities	(336.5)	(278.4)
Net amount recognized	(344.0)	(286.1)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Prior service cost (credit)	(0.1)	(0.1)
Net amount recognized	$ (0.1)	$ (0.1)
Weighted Average Assumptions Used to Determine Benefit Obligations as of the period
Discount rate	1.41%	2.17%
Rate of compensation increase	2.59%	2.59%
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate, Service Cost	2.42%	1.99%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate, Interest Cost	1.84%	1.57%
Expected return on plan assets	4.43%	4.69%
Rate of compensation increase	2.59%	2.64%
Net Periodic Benefit Cost
Service cost	$ 8.6	$ 9.5	8.4
Interest cost	5.4	5.0	4.4
Expected return on plan assets	(0.9)	(1.0)	(0.9)
Amortization of prior service cost (credit)	0.0	0.0	0.0
Annual mark-to-market adjustment (gain) loss	59.1	(9.2)	13.2
Net curtailment and settlement gain	0.0	0.0	0.0
Net periodic benefit cost	72.2	4.3	25.1
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss
Amortization of prior service cost (credit)	0.0	0.0	0.0
Total recognized in other comprehensive (income) loss	0.0	0.0	0.0
Total recognized in net periodic benefit cost and other comprehensive (income) loss	$ 72.2	$ 4.3	$ 25.1
Canada | Pension Plans
Pension plans and other postretirement benefit plans
Defined Benefit Plan Percentage of Certain Specified foreign Plan Assets to Total Foreign Plan Assets	96.00%	96.00%
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended
Expected return on plan assets	4.50%
Other Foreign Member [Member] | Pension Plans
Pension plans and other postretirement benefit plans
Defined Benefit Plan Percentage of Certain Specified foreign Plan Assets to Total Foreign Plan Assets	4.00%	4.00%