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Employee Retirement Plans (Tables)
 12 Months Ended
Dec. 31, 2018
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
The components of net pension income for the years ended December 31, 2018, 2017 and 2016, were as follows:
 
Pension Benefits
 
2018
 
2017
 
2016
Interest cost
$
(16.0
)
 
$
(17.3
)
 
$
(18.1
)
Expected return on plan assets
28.4

 
27.7

 
30.2

Net periodic benefit income
12.4

 
10.4

 
12.1

Settlement charge
—

 
(0.8
)
 
(7.0
)
Net pension income
$
12.4

 
$
9.6

 
$
5.1
Schedule of Defined Benefit Plans Disclosures
The following table provides a reconciliation of the projected benefit obligation, fair value of plan assets and the funded status of the pension plans as of December 31, 2018 and 2017:
 
Pension Benefits
 
2018
 
2017
Changes in benefit obligation
 
 
 
Projected benefit obligation, beginning of year
$
(538.9
)
 
$
(560.6
)
Interest cost
(16.0
)
 
(17.3
)
Actuarial gain (loss)
34.2

 
(17.2
)
Benefits paid
44.3

 
54.3

Liability benefit from lump-sum settlement
—

 
1.9

Projected benefit obligation, end of year
(476.4
)
 
(538.9
)
 
 
 
 
Changes in plan assets
 
 
 
Fair value of plan assets, beginning of year
454.8

 
446.4

Actual return (loss) on plan assets
(23.7
)
 
61.7

Employer contributions
7.0

 
1.0

Benefits paid
(44.3
)
 
(54.3
)
Fair value of plan assets, end of year
393.8

 
454.8

 
 
 
 
Funded status
$
(82.6
)
 
$
(84.1
)
Schedule of Amounts Recognized in Balance Sheet
Amounts recognized on the consolidated balance sheets as of December 31, 2018 and 2017, were as follows:
 
Pension Benefits
 
2018
 
2017
Current liabilities
$
(1.7
)
 
$
(1.7
)
Noncurrent liabilities
(80.9
)
 
(82.4
)
Total amount recognized
$
(82.6
)
 
$
(84.1
)
Reconciliation of Accumulated Other Comprehensive Income (Loss) Prior to Any Deferred Tax Effects
The following table provides a reconciliation of the Company’s accumulated other comprehensive loss prior to any deferred tax effects at December 31, 2018 and 2017:
 
Pension Benefits
 
Actuarial Gain / (Loss), net
Balance at January 1, 2017
$
(34.7
)
Amount arising during the period
18.7

Impact of pension plan settlement charge included in net earnings (loss)
0.8

Balance at December 31, 2017
(15.2
)
Amount arising during the period
(18.1
)
Balance at December 31, 2018
$
(33.3
)
Schedule of Assumptions Used
The weighted average assumptions used to determine net periodic benefit costs for the years ended December 31, 2018, 2017 and 2016, were as follows:
 
Pension Benefits
 
2018
 
2017
 
2016
Discount rate
3.52
%
 
3.91
%
 
3.32
%
Expected long-term return on plan assets
6.50
%
 
6.50
%
 
6.50
%


The weighted average assumptions used to determine pension benefit obligations at December 31, 2018 and 2017, were as follows:
 
Pension Benefits
 
2018
 
2017
Discount rate (end of year rate)
4.22
%
 
3.52
%
Schedule of Expected Benefit Payments
An estimate of the Plans’ present value of future benefit payments to be made from funded qualified plans and unfunded non-qualified plans to plan participants at December 31, 2018, were as follows:
 
Future Pension
Benefit Payments
2019
$
40.4

2020
38.8

2021
38.0

2022
36.8

2023
35.3

2024 – 2028
160.7

Thereafter
126.4

Total
$
476.4
Schedule of Allocation of Plan Assets
The fair values of the Company’s pension plan assets at December 31, 2018 and 2017, by asset category were as follows:
 
 
December 31, 2018
 
December 31, 2017
Asset Category
 
Total
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Level 1
 
Level 2
 
Level 3
Cash and cash equivalents
 
$
2.7

 
$
2.7

 
$
—

 
$
—

 
$
2.6

 
$
2.6

 
$
—

 
$
—

Debt securities
 
113.9

 
—

 
113.9

 
—

 
118.4

 
—

 
118.4

 
—

Equity securities
 
26.4

 
—

 
26.4

 
—

 
40.0

 
—

 
40.0

 
—

 
 
143.0

 
$
2.7

 
$
140.3

 
$
—

 
161.0

 
$
2.6

 
$
158.4

 
$
—

Investments measured at net asset value (“NAV”) (1)
 
250.8

 
 
 
 
 
 
 
293.8

 
 
 
 
 
 
 
 
$
393.8

 
 
 
 
 
 
 
$
454.8

 
 
 
 
 
 

______________________________
(1) 
These investments consist of privately placed funds that are valued based on NAV. NAV of the funds is based on the fair value of each fund’s underlying investments. In accordance with ASC Subtopic 820-10, certain investments that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy.
Schedule of Fair Value Measurements in Collective Trusts [Table Text Block]
The fair value measurements in common/collective trusts, calculated using a NAV and their redemption restrictions, for the years ended December 31, 2018 and 2017, are as follows:
 
Fair Value
 
Redemption Frequency (If Currently Eligible)
 
Redemption Notice Period
 
2018
 
2017
 
JP Morgan Chase Bank Strategic Property Fund
$
18.0

 
$
23.3

 
Quarterly
 
30 days
Pyramis Long Corporate A or Better
78.6

 
73.9

 
Daily
 
15 days
Pyramis Long Duration
79.2

 
73.5

 
Daily
 
15 days
Russell 3000 Index NL
75.0

 
123.1

 
Daily
 
1 day
Total value of investments measured at NAV
$
250.8

 
$
293.8