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Defined Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2017

Obligations and Funded Status

(In millions)		Pension Benefits								Postretirement Benefits
Obligations and Funded Status at December 31		2017				2016				2017				2016
Change in the Projected Benefit Obligation (PBO):
Projected benefit obligation at beginning of year		$	791.7			$	767.7			$	3.6			$	15.6
Service cost			0.6				9.6				—				—
Interest cost			33.3				34.4				—				0.3
Plan amendments			—				0.1				—				(12.3	)
Actuarial loss (gain)			40.6				11.7				(1.4	)			1.6
Benefits paid			(33.8	)			(31.8	)			(0.4	)			(1.6	)
Foreign exchange			—				—				(0.2	)			—
Projected benefit obligation at end of year		$	832.4			$	791.7			$	1.6			$	3.6
Accumulated benefit obligation at end of year (excludes the impact of future compensation increases)		$	832.4			$	791.7
Change in Plan Assets:
Fair value of plan assets at beginning of year		$	577.7			$	561.9			$	—			$	—
Actual return on plan assets			83.2				46.6				—				—
Employer contributions			29.5				1.0				0.5				1.5
Benefits paid			(33.8	)			(31.8	)			(0.5	)			(1.5	)
Fair value of plan assets at end of year		$	656.6			$	577.7			$	—			$	—
Funded status (Fair value of plan assets less PBO)		$	(175.8	)		$	(214.0	)		$	(1.6	)		$	(3.6	)

Amounts Recognized in Consolidated Balance Sheets

Amounts recognized in the consolidated balance sheets consist of:

		Pension Benefits								Postretirement Benefits
(In millions)		2017				2016				2017				2016
Current benefit payment liability		$	(1.1	)		$	(1.0	)		$	(0.2	)		$	(0.4	)
Accrued benefit liability			(174.7	)			(213.0	)			(1.4	)			(3.2	)
Net amount recognized		$	(175.8	)		$	(214.0	)		$	(1.6	)		$	(3.6	)

Amounts in Accumulated Other Comprehensive Loss that have not yet been Recognized as Components of Net Periodic Benefit Cost

The amounts in accumulated other comprehensive loss on the consolidated balance sheets that have not yet been recognized as components of net periodic benefit cost were as follows:

(In millions)		Pension Benefits				Postretirement Benefits
Net actuarial loss at December 31, 2015		$	71.1			$	0.3
Recognition of actuarial loss			—				(1.9	)
Current year actuarial loss			2.3				1.6
Net actuarial loss at December 31, 2016		$	73.4			$	—
Recognition of actuarial (loss) gain			(0.9	)			1.4
Current year actuarial gain			(5.3	)			(1.4	)
Net actuarial loss at December 31, 2017		$	67.2			$	—
Net prior service cost (credit) at December 31, 2015		$	0.1			$	(6.4	)
Prior service cost recognition due to plan amendments			—				(12.2	)
Amortization			—				13.5
Prior service cost recognition due to curtailment			(0.1	)			—
Net prior service cost (credit) at December 31, 2016		$	—			$	(5.1	)
Amortization			—				5.1
Net prior service cost (credit) at December 31, 2017		$	—			$	—
Total at December 31, 2017		$	67.2			$	—

Components of Net Periodic Benefit Cost for Pension and Postretirement Benefits

Components of net periodic benefit cost were as follows:

Components of Net Periodic Benefit (Income) Cost		Pension Benefits												Postretirement Benefits
(In millions)		2017				2016				2015				2017				2016				2015
Service cost		$	0.6			$	9.6			$	11.5			$	—			$	—			$	0.1
Interest cost			33.3				34.4				33.7				—				0.3				0.6
Expected return on plan assets			(37.3	)			(37.2	)			(40.2	)			—				—				—
Recognition of actuarial losses (gains)			0.9				—				2.9				(1.4	)			1.9				(0.4	)
Amortization of prior service cost (credits)			—				—				0.1				(5.1	)			(13.5	)			(13.5	)
Net periodic benefit (income) cost		$	(2.5	)		$	6.8			$	8.0			$	(6.5	)		$	(11.3	)		$	(13.2	)

Schedule of Assumptions Used

Assumptions		Pension Benefits						Postretirement Benefits
		2017		2016		2015		2017		2016		2015
Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31:
Discount rate		3.8%		4.3%		4.6%		3.4%		3.4%		4.1%
Rate of compensation increase		—		4.0%		4.0%		—		—		—
Weighted-Average Assumptions Used to Determine Net Cost for Years Ended December 31:
Discount rate		4.3%		4.6%		4.2%		3.4%		4.1%		3.5%
Expected long-term rate of return on plan assets		6.4%		6.6%		6.8%		—		—		—
Rate of compensation increase		—		4.0%		4.0%		—		—		—

Assumed Health Care Cost Trend Rates Used to Determine Benefit Obligations and Net Cost

		Postretirement Benefits
		2017				2016
Assumed Health Care Cost Trend Rates Used to Determine Benefit Obligations and Net Cost at December 31:
Health care cost trend rate assumed for next year			7.1/8.4	%(a)			7.3/8.2	%(a)
Rate that the cost trend rate is assumed to decline (the ultimate trend rate)			4.5	%			4.5	%
Year that the rate reaches the ultimate trend rate			2026				2025

^(a) The pre-65 initial health care cost trend rate is shown first / followed by the post-65 rate.

Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates

A one-percentage-point change in assumed health care cost trend rates would have had the following effects in 2017:

(In millions)		1-Percentage- Point Increase				1-Percentage- Point Decrease
Effect on postretirement benefit obligation			(0.1	)			0.1

Fair Value of Pension Assets by Major Category of Plan Assets

The fair value of the pension assets by major category of plan assets as of December 31, 2017 and 2016 were as follows:

(In millions)		Total as of balance sheet date
		2017				2016
Group annuity/insurance contracts (level 3)		$	23.3			$	22.8
Collective trusts:
Cash and cash equivalents			12.5				6.9
Equity			285.9				258.8
Fixed income			277.7				235.4
Multi-strategy hedge funds			24.6				23.1
Real estate			32.6				30.7
Total		$	656.6			$	577.7

Reconciliation of Level Three Measurements

A reconciliation of Level 3 measurements was as follows:

		Group annuity/ insurance contracts
(In millions)		2017				2016
January 1		$	22.8			$	22.3
Actual return on assets related to assets still held			0.5				0.5
December 31		$	23.3			$	22.8

Schedule of Expected Benefit Payments

The following retirement benefit payments are expected to be paid:

(In millions)		Pension Benefits				Postretirement Benefits
2018		$	37.4			$	0.1
2019			39.1				0.1
2020			40.4				0.1
2021			41.6				0.1
2022			43.1				0.1
Years 2023-2027			229.9				0.3

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