The Company has a defined-benefit retirement plan (Company Plan) and a nonqualified supplemental retirement plan (PEP). Both plans have been closed to new participants since December 31, 2009. Employees participating in the Company Plan and the PEP no longer earn service-based credits, but continue to earn interest credits. In addition, effective January 1, 2010, all employees eligible for the defined-contribution retirement plan (401K Plan) receive a minimum 3% non-elective contribution (NEC) concurrent with each payroll period. Employees are not required to make a contribution to the 401K Plan to receive the NEC. The NEC is non-forfeitable and vests immediately. The 401K Plan also permits discretionary contributions by the Company of up to 1% and up to 3% of pay for eligible employees based on service.

The Company’s 401K Plan covers substantially all pre-Covance acquisition employees. Prior to 2010, Company contributions to the plan were based on a percentage of employee contributions. From 2011, the Company made non-elective and discretionary contributions to the plan. In 2018, 2017, and 2016, non-elective and discretionary contributions were $65.0, $58.1 and $56.0, respectively. As a result of the Covance acquisition, the Company also incurred expense of $66.3, $58.4, and $51.1 for the Covance 401K Plan in 2018, 2017 and 2016, respectively. Under the Covance 401K Plan, which is available on a voluntary basis to substantially all U.S. Covance employees, the Company matches employee contributions up to a maximum Company contribution of 4.5%.

The Company Plan covers substantially all employees employed prior to December 31, 2009. The benefits to be paid under the Company Plan are based on years of credited service through December 31, 2009, interest credits and average compensation. The Company’s policy is to fund the Company Plan with at least the minimum amount required by applicable regulations. The Company made contributions to the Company Plan of $28.9, $16.0 and $10.8 in 2018, 2017 and 2016, respectively.

The PEP covers a portion of the Company’s senior management group. Prior to 2010, the PEP provided for the payment of the difference, if any, between the amount of any maximum limitation on annual benefit payments under the Employee Retirement Income Security Act of 1974 and the annual benefit that would be payable under the Company Plan but for such limitation. Effective January 1, 2010, employees participating in the PEP no longer earn service-based credits. The PEP is an unfunded plan.

Projected pension expense for the Company Plan and the PEP is expected to increase to $13.3 in 2019. This amount excludes any accelerated recognition of pension cost due to the total lump-sum payouts exceeding certain components of net periodic pension cost in a fiscal year. If such levels were to be met in 2019, the Company projects that it would result in additional pension expense of several million dollars. The actual amount would be determined in the fiscal quarter when the lump-sum payments cross the threshold and would be based upon the plan's funded status and actuarial assumptions in effect at that time.

The Company plans to make contributions of $2.1 to the Company Plan and the PEP during 2019.

The effect on operations for both the Company Plan and the PEP are summarized as follows:



	Year ended December 31,
	2018			2017			2016
Service cost for benefits earned	$	5.2		$	5.5		$	4.9
Interest cost on benefit obligation	13.0			14.4			15.5
Expected return on plan assets	(16.5		)	(16.3		)	(16.7		)
Net amortization and deferral	11.7			11.0			11.2
Settlements	7.5			—			—
Defined-benefit plan costs	$	20.9		$	14.6		$	14.9

Amounts included in accumulated other comprehensive earnings consist of unamortized net loss of $116.9. The accumulated other comprehensive earnings that are expected to be recognized as components of the defined-benefit plan costs during 2019 are $10.5 related to amortization of the net loss. For the year ended December 31, 2018, the Company recorded a pension settlement charge of $7.5 recorded in Other, net on the Consolidated Statement of Operations as a result of lump sum distributions exceeding threshold levels.

A summary of the changes in the projected benefit obligations of the Company Plan and the PEP are summarized as follows:



	2018			2017
Balance at January 1	$	368.0		$	366.5
Service cost	5.2			5.5
Interest cost	13.0			14.4
Actuarial (gain) loss	(21.9		)	12.2
Benefits and administrative expenses paid	(30.0		)	(30.6		)
Merger of Covance SERP	$	4.2		$	—
Balance at December 31	$	338.5		$	368.0

The Accumulated Benefit Obligation was $338.5 and $368.0 at December 31, 2018 and 2017, respectively.

A summary of the changes in the fair value of plan assets follows:



	2018			2017
Fair value of plan assets at beginning of year	$	263.7		$	247.5
Actual return on plan assets	(14.3		)	29.2
Employer contributions	31.4			17.6
Benefits and administrative expenses paid	(30.0		)	(30.6		)
Fair value of plan assets at end of year	$	250.8		$	263.7

The net funded status of the Company Plan and the PEP at December 31:



	2018		2017
Funded status	$	87.6	$	104.3

Recorded as:
Accrued expenses and other	$	2.1	$	2.2
Other liabilities	85.5		102.1
	$	87.6	$	104.3

Weighted average assumptions used in the accounting for the Company Plan and the PEP are summarized as follows:



	2018		2017		2016
Discount rate	4.4	%	3.7	%	4.2	%
Expected long term rate of return	6.5	%	6.8	%	6.8	%

The Company also updated the mortality assumption to the RP-2014 Mortality Tables in 2016 and again in 2017 which decreased the Company's total projected obligation.

The Company maintains an investment policy for the management of the Company Plan’s assets. The objective of this policy is to build a portfolio designed to achieve a balance between investment return and asset protection by investing in indexed funds that are comprised of equities of high quality companies and in high quality fixed income securities which are broadly balanced and represent all market sectors. The target allocations for plan assets are 50% equity securities, 43% fixed income securities and 7% in other assets. Equity securities primarily include investments in large-cap, mid-cap and small-cap companies located in the U.S. and to a lesser extent international equities in developed and emerging countries. Fixed income securities primarily include U.S. Treasury securities, mortgage-backed bonds and corporate bonds of companies from diversified industries. Other assets include investments in commodities. The weighted average expected long-term rate of return for the Company Plan’s assets is as follows:



	Target Allocation		Weighted Average Expected Long-Term Rate of Return
Equity securities	50.0	%	3.4	%
Fixed income securities	43.0	%	2.7	%
Other assets	7.0	%	0.4	%

The fair values of the Company Plan’s assets at December 31, 2018, and 2017, by asset category are as follows:



			Fair Value Measurements as of
			December 31, 2018
	Fair Value as of December 31, 2018		Using Fair Value Hierarchy
Asset Category	Fair Value as of December 31, 2018		Level 1		Level 2		Level 3
Cash	$	7.8	$	7.8	$	—	$	—
Equity securities:
U.S. large cap - blend (a)	54.2		—		54.2		—
U.S. mid cap - blend (b)	20.4		—		20.4		—
U.S. small cap - blend (c)	6.5		—		6.5		—
International equity - blend (d)	36.5		—		36.5		—
Real estate (e)	11.8		—		11.8		—
Fixed income securities:
U.S. fixed income (f)	103.5		—		103.5		—
U.S inflation protection income (g)	6.4		—		6.4		—
Total fair value of the Company Plan’s assets	$	247.1	$	7.8	$	239.3	$	—



			Fair Value Measurements as of
			December 31, 2017
	Fair Value as of December 31, 2017		Using Fair Value Hierarchy
Asset Category	Fair Value as of December 31, 2017		Level 1		Level 2		Level 3
Cash	$	7.4	$	7.4	$	—	$	—
Equity securities:
U.S. large cap - blend (a)	59.9		—		59.9		—
U.S. mid cap - blend (b)	23.6		—		23.6		—
U.S. small cap - blend (c)	7.7		—		7.7		—
International equity - blend (d)	39.1		—		39.1		—
Commodities index (h)	12.8		—		12.8		—
Fixed income securities:
U.S. fixed income (f)	107.0		—		107.0		—
U.S inflation protection income (g)	6.2		—		6.2		—
Total fair value of the Company Plan’s assets	$	263.7	$	7.4	$	256.3	$	—


a)	This category represents an equity index fund not actively managed that tracks the S&P 500 Index.


b)	This category represents an equity index fund not actively managed that tracks the S&P mid-cap 400 Index.


c)	This category represents an equity index fund not actively managed that tracks the Russell 2000 Index.


d)	This category represents an equity index fund not actively managed that tracks the MSCI ACWI ex USA Index.


e)	This category represents a real estate index fund not actively managed that tracks the Vanguard REIT Index.


f)	This category primarily represents bond index funds not actively managed that track the Northern Trust U.S. Aggregate Index as well as an actively managed strategy which utilizes the Metropolitan West Total Return Bond Index as its primary prospectus benchmark.


g)	This category primarily represents a bond index fund not actively managed that tracks the Northern Trust U.S. TIPS Index.


h)	This category represents a commodities index fund not actively managed that tracks the Dow Jones - UBS Commodity Index.

The following estimated benefit payments under the Company Plan and PEP, which were used in the calculation of projected benefit obligations, are expected to be paid as follows:



2019	$	28.2
2020	27.2
2021	26.7
2022	26.4
2023	25.8
Years 2024 and thereafter	117.2

In addition to the PEP, as a result of the Covance acquisition, the Company also has a frozen non-qualified Supplemental Executive Retirement Plan (SERP). The SERP, which is not funded, is intended to provide retirement benefits for certain employees who were executive officers of Covance prior to the acquisition. Benefit amounts are based upon years of service and compensation of the participating employees. The pension benefit obligation as of the Covance acquisition date was $32.8. As of December 31, 2018, the SERP was combined with the PEP.

As a result of the Covance acquisition, the Company sponsors two defined-benefit pension plans for the benefit of its employees at two U.K. subsidiaries (U.K. Plans) and one defined-benefit pension plan for the benefit of its employees at a German subsidiary (German Plan), all of which are legacy plans of previously acquired companies. Benefit amounts for all three plans are based upon years of service and compensation. The German Plan is unfunded while the U.K. Plans are funded. The Company’s funding policy has been to contribute annually amounts at least equal to the local statutory funding requirements.



	U.K. Plans
	Year Ended December 31, 2018			Year Ended December 31, 2017
Service cost	$	4.8		$	5.1
Interest cost	7.4			7.6
Expected return on plan assets	(12.6		)	(11.5		)
Net amortization and deferral	—			0.7
Expected participant contributions	(1.3		)	(1.3		)
Defined-benefit plan costs	$	(1.7	)	$	0.6

Assumptions used to determine defined-benefit plan cost:
Discount rate	2.5		%	2.7		%
Expected return on assets	4.5		%	4.7		%
Salary increases	3.6		%	3.8		%



	German Plan
	Year Ended December 31, 2018			Year Ended December 31, 2017
Service cost	$	1.2		$	1.2
Interest cost	0.6			0.5
Defined-benefit plan costs	$	1.8		$	1.7

Assumptions used to determine defined-benefit plan cost:
Discount rate	1.7		%	1.7		%
Expected return on assets	N/A			N/A
Salary increases	2.0		%	2.0		%

The weighted average expected long-term rate of return on assets of the U.K Plans is based on the target asset allocation and the average rate of growth expected for the asset classes invested. The rate of expected growth is derived from a combination of historic returns, current market indicators, the expected risk premium for each asset class over the risk-free rate, and the opinion of professional advisors.

The change in the projected benefit obligation and plan assets, the funded status of the plan and a reconciliation of such funded status to the amounts reported in the consolidated balance sheet as of December 31, 2018, and December 31, 2017, is as follows:



Change in Projected Benefit Obligation:	U.K. Plans
	2018			2017
Balance at beginning of year	$	303.4		$	278.1
Service cost	4.8			5.1
Interest cost	7.4			7.6
Actuarial gain	(34.9		)	(7.7		)
Benefits paid	(6.3		)	(6.1		)
Plan amendments	1.4			—
Foreign currency exchange rate changes	(15.7		)	26.4
Balance at end of year	$	260.1		$	303.4



Change in Projected Benefit Obligation:	German Plan
	2018			2017
Balance at beginning of year	$	35.7		$	29.0
Service cost	1.2			1.2
Interest cost	0.6			0.5
Actuarial (gain) loss	(1.7		)	1.0
Benefits paid	(0.2		)	(0.2		)
Foreign currency exchange rate changes	(1.6		)	4.2
Balance at end of year	$	34.0		$	35.7



Change in Fair Value of Assets:	U.K. Plans
	2018			2017
Balance at beginning of year	$	281.9		$	233.2
Company contributions	6.5			6.3
Participant contributions	1.3			1.3
Actual return on assets	(13.6		)	23.6
Benefits paid	(6.3		)	(6.1		)
Foreign currency exchange rate changes	(15.2		)	23.6
Fair value of plan assets at end of year	$	254.6		$	281.9



	U.K. Plans
	2018		2017
Funded status	$	5.6	$	21.5
Recorded as:
Other liabilities	5.6		21.5
	$	5.6	$	21.5



	German Plan
	2018		2017
Funded status	$	34.0	$	35.7
Recorded as:
Accrued expenses and other	$	0.3	$	0.3
Other liabilities	33.7		35.4
	$	34.0	$	35.7

The Company contributed $6.5 in 2018 to the U.K. Plans and expects to contribute $6.1 in 2019. No contributions were made to the German plan during 2018, nor are any contributions expected to be made in 2019, as the plan is unfunded.

The accumulated benefit obligation for the U.K. Plans and the German Plan was $223.8 and $30.1 at December 31, 2018, respectively. The accumulated benefit obligation for the U.K. Plans and the German Plan was $261.2 and $31.5 at December 31, 2017, respectively.

The amounts recognized in accumulated other comprehensive income for the year ended December 31, 2018, and December 31, 2017, is as follows:



	U.K. Plans
	2018			2017
Net actuarial loss	$	10.1		$	17.2
Less: Tax benefit (deferred tax asset)	(1.7		)	(2.9		)
Accumulated other comprehensive income impact	$	8.4		$	14.3

Assumptions used to determine benefit obligations:
Discount rate	2.9		%	2.5		%
Salary increases	3.6		%	3.6		%



	German Plan
	2018			2017
Net actuarial loss/(gain)	$	(1.0	)	$	0.7
Less: Tax expense (deferred tax liability)	0.3			(0.2		)
Accumulated other comprehensive income impact	$	(0.7	)	$	0.5

Assumptions used to determine benefit obligations:
Discount rate	1.9		%	1.7		%
Salary increases	2.0		%	2.0		%

There is no net actuarial loss for the U.K. Plans and German Plan, respectively required to be amortized from accumulated other comprehensive income into net periodic pension cost in 2019.

The investment policies for the U.K. Plans are set by the plan trustees, based upon the guidance of professional advisors and after consultation with the Company, taking into consideration the plans’ liabilities and future funding levels. The trustees have set the long-term investment policy largely in accordance with the asset allocation of a broadly diversified investment portfolio. Assets are generally invested within the target ranges as follows:



Equity securities	60.0%	to	70.0%
Debt securities	10.0%	to	15.0%
Annuities	10.0%	to	20.0%
Real estate	—%	to	10.0%
Other	—%	to	5.0%

The weighted average asset allocation of the U.K. Plans as of December 31, 2018, by asset category is as follows:



		December 31, 2018
Equity securities		65.0%
Debt securities		19.0%
Annuities		11.0%
Real estate		5.0%

Investments are made in pooled investment funds. Pooled investment fund managers are regulated by the Financial Conduct Authority in the U.K. and operate under terms which contain restrictions on the way in which the portfolios are managed and require the managers to ensure that suitable internal operating procedures are in place. The trustees have set performance objectives for each fund manager and routinely monitor and assess the managers’ performance against such objectives. Annuities represent annuity buy-in insurance policies purchased by the plan trustees from large, financially sound insurers. The cash flows from the annuities are intended to match the plan’s obligations to specific groups of participants, typically those participants currently receiving benefits.

The fair value of the Company’s U.K. Plans' assets as of December 31, 2018, and December 31, 2017, by asset category, are as follows:



			Fair Value Measurements as of
			December 31, 2018
	December 31, 2018		Using Fair Value Hierarchy
Asset Category	December 31, 2018		Level 1		Level 2		Level 3
Cash	$	0.7	$	0.7	$	—	$	—
Mutual funds (a)	226.6		—		226.6		—
Annuities (b)	27.3		—		—		27.3
Total fair value of the Company Plan’s assets	$	254.6	$	0.7	$	226.6	$	27.3



			Fair Value Measurements as of
			December 31, 2017
	December 31, 2017		Using Fair Value Hierarchy
Asset Category	December 31, 2017		Level 1		Level 2		Level 3
Cash	$	0.8	$	0.8	$	—	$	—
Mutual funds (a)	249.6		—		249.6		—
Annuities (b)	31.5		—		—		31.5
Total fair value of the Company Plan’s assets	$	281.9	$	0.8	$	249.6	$	31.5

Mutual funds represent pooled investment vehicles offered by investment managers, which are generally comprised of investments in equities, bonds, property and cash. The plans’ trustees hold units in these funds, the value of which is determined by the number of units held multiplied by the unit price calculated by the investment managers. That unit price is derived based on the market value of the securities that comprise the fund, which are determined by quoted prices in active markets. No element of the valuation is based on inputs made by the plans’ trustees.

Annuities represent annuity buy-in insurance policies, whereby the insurer pays the pension payments for the lifetime of the members covered. The annuities are assets of the plan and payments from the insurer are made to the plans’ trustees, who then use those proceeds to pay the pensioners. The cash flows from the annuities are intended to effectively match the payments to the pensioners covered by the policy. As such, these assets are valued actuarially based upon the value of the liabilities with which they are associated. As the valuation of these assets is judgmental, and there are no observable inputs associated with the valuation, these assets are classified as Level 3 in the fair value hierarchy.



Fair Value Measurement of Level 3 Pension Assets	Annuities
Balance at January 1, 2017	$	29.8
Actual return on plan assets	1.7
Balance at December 31, 2017	31.5
Actual return on plan assets	(4.2		)
Balance at December 31, 2018	$	27.3

Expected future benefit payments are as follows:



	U.K. Plans		German Plan
2019	$	4.6	$	0.3
2020	4.9		0.5
2021	5.2		0.5
2022	6.4		0.6
2023	6.7		0.7
Years 2024 and thereafter	40.6		3.6

Post-employment Retiree Health and Welfare Plan

As a result of the Covance acquisition, the Company sponsors a post-employment retiree health and welfare plan for the benefit of eligible employees at certain U.S. subsidiaries who retire after satisfying service and age requirements. This plan is funded on a pay-as-you-go basis and the cost of providing these benefits is shared with the retirees.

Post-retirement Medical Plan

The Company assumed obligations under a subsidiary's post-retirement medical plan. Coverage under this plan is restricted to a limited number of existing employees of the subsidiary. This plan is unfunded and the Company’s policy is to fund benefits as claims are incurred. The effect on operations of the post-retirement medical plan is shown in the following table:



	Year ended December 31,
	2018			2017			2016
Service cost for benefits earned	$	—		$	—		$	—
Interest cost on benefit obligation	0.3			0.3			0.3
Net amortization and deferral	(1.3		)	(6.7		)	(15.9		)
Post-retirement medical plan costs	$	(1.0	)	$	(6.4	)	$	(15.6	)

Amounts included in accumulated other comprehensive earnings consist of unamortized net loss of $2.4. The accumulated other comprehensive earnings that are expected to be recognized as components of the post-retirement medical plan costs during 2019 are $0.4 related to amortization of the net gain resulting from the shift of Medicare-eligible participants to private exchanges.

A summary of the changes in the accumulated post-retirement benefit obligation follows:



	2018			2017
Balance at January 1	$	8.6		$	6.8
Interest cost on benefit obligation	0.3			0.3
Actuarial loss	(1.2		)	2.5
Benefits paid	(0.8		)	(1.0		)
Balance at December 31	$	6.9		$	8.6

Recorded as:
Accrued expenses and other	$	0.9		$	1.2
Other liabilities	6.0			7.4
	$	6.9		$	8.6

The weighted-average discount rates used in the calculation of the accumulated post-retirement benefit obligation were 4.2% and 3.4% as of December 31, 2018, and 2017, respectively. The healthcare cost trend rate was removed due to the expectation of future funding to be at the same level as the previous year's funding.

The following assumed benefit payments under the Company's post-retirement benefit plan, which reflect expected future service, as appropriate, and which were used in the calculation of projected benefit obligations, are expected to be paid as follows:



2019	$	0.9
2020	0.9
2021	0.9
2022	0.8
2023	0.7
Years 2024 and thereafter	2.4

Deferred Compensation Plan

The Company has a Deferred Compensation Plan (DCP) under which certain of its executives may elect to defer up to 100.0% of their annual cash incentive pay and/or up to 50.0% of their annual base salary and/or eligible commissions subject to annual limits established by the U.S. government. The DCP provides executives a tax efficient strategy for retirement savings and capital accumulation without significant cost to the Company. The Company makes no contributions to the DCP. Amounts deferred by a participant are credited to a bookkeeping account maintained on behalf of each participant, which is used for measurement and determination of amounts to be paid to a participant, or his or her designated beneficiary, pursuant to the terms of the DCP. The amounts accrued under this plan were $64.2 and $64.5 at December 31, 2018, and 2017, respectively. Deferred amounts are the Company's general unsecured obligations and are subject to claims by the Company's creditors. The Company's general assets may be used to fund obligations and pay DCP benefits.

Schedule of Defined Benefit Plans Disclosures [Table Text Block]



	Year ended December 31,
	2018			2017			2016
Service cost for benefits earned	$	—		$	—		$	—
Interest cost on benefit obligation	0.3			0.3			0.3
Net amortization and deferral	(1.3		)	(6.7		)	(15.9		)
Post-retirement medical plan costs	$	(1.0	)	$	(6.4	)	$	(15.6	)

A summary of the changes in the projected benefit obligations of the Company Plan and the PEP are summarized as follows:



	2018			2017
Balance at January 1	$	368.0		$	366.5
Service cost	5.2			5.5
Interest cost	13.0			14.4
Actuarial (gain) loss	(21.9		)	12.2
Benefits and administrative expenses paid	(30.0		)	(30.6		)
Merger of Covance SERP	$	4.2		$	—
Balance at December 31	$	338.5		$	368.0

The effect on operations for both the Company Plan and the PEP are summarized as follows:



	Year ended December 31,
	2018			2017			2016
Service cost for benefits earned	$	5.2		$	5.5		$	4.9
Interest cost on benefit obligation	13.0			14.4			15.5
Expected return on plan assets	(16.5		)	(16.3		)	(16.7		)
Net amortization and deferral	11.7			11.0			11.2
Settlements	7.5			—			—
Defined-benefit plan costs	$	20.9		$	14.6		$	14.9

A summary of the changes in the accumulated post-retirement benefit obligation follows:



	2018			2017
Balance at January 1	$	8.6		$	6.8
Interest cost on benefit obligation	0.3			0.3
Actuarial loss	(1.2		)	2.5
Benefits paid	(0.8		)	(1.0		)
Balance at December 31	$	6.9		$	8.6

Recorded as:
Accrued expenses and other	$	0.9		$	1.2
Other liabilities	6.0			7.4
	$	6.9		$	8.6

Schedule of Changes in Fair Value of Plan Assets [Table Text Block]

A summary of the changes in the fair value of plan assets follows:



	2018			2017
Fair value of plan assets at beginning of year	$	263.7		$	247.5
Actual return on plan assets	(14.3		)	29.2
Employer contributions	31.4			17.6
Benefits and administrative expenses paid	(30.0		)	(30.6		)
Fair value of plan assets at end of year	$	250.8		$	263.7

Schedule of Net Funded Status [Table Text Block]

he net funded status of the Company Plan and the PEP at December 31:



	2018		2017
Funded status	$	87.6	$	104.3

Recorded as:
Accrued expenses and other	$	2.1	$	2.2
Other liabilities	85.5		102.1
	$	87.6	$	104.3

Schedule of Assumptions Used [Table Text Block]

Weighted average assumptions used in the accounting for the Company Plan and the PEP are summarized as follows:



	2018		2017		2016
Discount rate	4.4	%	3.7	%	4.2	%
Expected long term rate of return	6.5	%	6.8	%	6.8	%

Defined Benefit Plan Fair Value Of Plan Assets By Category [Table Text Block]

The weighted average expected long-term rate of return for the Company Plan’s assets is as follows:



	Target Allocation		Weighted Average Expected Long-Term Rate of Return
Equity securities	50.0	%	3.4	%
Fixed income securities	43.0	%	2.7	%
Other assets	7.0	%	0.4	%

The fair values of the Company Plan’s assets at December 31, 2018, and 2017, by asset category are as follows:



			Fair Value Measurements as of
			December 31, 2018
	Fair Value as of December 31, 2018		Using Fair Value Hierarchy
Asset Category	Fair Value as of December 31, 2018		Level 1		Level 2		Level 3
Cash	$	7.8	$	7.8	$	—	$	—
Equity securities:
U.S. large cap - blend (a)	54.2		—		54.2		—
U.S. mid cap - blend (b)	20.4		—		20.4		—
U.S. small cap - blend (c)	6.5		—		6.5		—
International equity - blend (d)	36.5		—		36.5		—
Real estate (e)	11.8		—		11.8		—
Fixed income securities:
U.S. fixed income (f)	103.5		—		103.5		—
U.S inflation protection income (g)	6.4		—		6.4		—
Total fair value of the Company Plan’s assets	$	247.1	$	7.8	$	239.3	$	—



			Fair Value Measurements as of
			December 31, 2017
	Fair Value as of December 31, 2017		Using Fair Value Hierarchy
Asset Category	Fair Value as of December 31, 2017		Level 1		Level 2		Level 3
Cash	$	7.4	$	7.4	$	—	$	—
Equity securities:
U.S. large cap - blend (a)	59.9		—		59.9		—
U.S. mid cap - blend (b)	23.6		—		23.6		—
U.S. small cap - blend (c)	7.7		—		7.7		—
International equity - blend (d)	39.1		—		39.1		—
Commodities index (h)	12.8		—		12.8		—
Fixed income securities:
U.S. fixed income (f)	107.0		—		107.0		—
U.S inflation protection income (g)	6.2		—		6.2		—
Total fair value of the Company Plan’s assets	$	263.7	$	7.4	$	256.3	$	—


a)	This category represents an equity index fund not actively managed that tracks the S&P 500 Index.


b)	This category represents an equity index fund not actively managed that tracks the S&P mid-cap 400 Index.


c)	This category represents an equity index fund not actively managed that tracks the Russell 2000 Index.


d)	This category represents an equity index fund not actively managed that tracks the MSCI ACWI ex USA Index.


e)	This category represents a real estate index fund not actively managed that tracks the Vanguard REIT Index.


f)	This category primarily represents bond index funds not actively managed that track the Northern Trust U.S. Aggregate Index as well as an actively managed strategy which utilizes the Metropolitan West Total Return Bond Index as its primary prospectus benchmark.


g)	This category primarily represents a bond index fund not actively managed that tracks the Northern Trust U.S. TIPS Index.


h)	This category represents a commodities index fund not actively managed that tracks the Dow Jones - UBS Commodity Index.

Schedule of Expected Benefit Payments [Table Text Block]

The following estimated benefit payments under the Company Plan and PEP, which were used in the calculation of projected benefit obligations, are expected to be paid as follows: