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Retirement Plans and Other Post-Retirement Benefits (Tables) | 12 Months Ended
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Dec. 31, 2017
Compensation And Retirement Disclosure [Abstract] |
Schedule of Change in Benefit Obligation and Plan Assets | Claims are paid as reported.
|  | Pension Benefits |  |  |  | Other Benefits |
In millions |  | 2017 |  |  |  | 2016 |  |  |  | 2017 |  |  |  | 2016 |
Change in Benefit Obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  | $ | 552.0 |  |  |  | $ | 541.9 |  |  |  | $ | 47.9 |  |  |  | $ | 51.0 |
Service cost |  |  | 10.7 |  |  |  |  | 10.5 |  |  |  |  | 1.2 |  |  |  |  | 1.1 |
Interest cost |  |  | 23.8 |  |  |  |  | 24.5 |  |  |  |  | 2.0 |  |  |  |  | 2.0 |
Plan amendments |  |  | 4.1 |  |  |  |  | 5.5 |  |  |  |  | — |  |  |  |  | — |
Participant contributions |  |  | — |  |  |  |  | — |  |  |  |  | 1.1 |  |  |  |  | 1.0 |
Actuarial (gain)/loss |  |  | 45.5 |  |  |  |  | 17.0 |  |  |  |  | 1.5 |  |  |  |  | (3.4 | )
Benefits paid |  |  | (36.5 | ) |  |  |  | (22.9 | ) |  |  |  | (3.0 | ) |  |  |  | (3.8 | )
One-time settlement |  |  | — |  |  |  |  | (24.2 | ) |  |  |  | — |  |  |  |  | — |
Effect of currency rate changes |  |  | 1.2 |  |  |  |  | (0.3 | ) |  |  |  | — |  |  |  |  | — |
Balance at end of year |  | $ | 600.8 |  |  |  | $ | 552.0 |  |  |  | $ | 50.7 |  |  |  | $ | 47.9 |
Change in Plan Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  | $ | 610.7 |  |  |  | $ | 594.9 |  |  |  | $ | — |  |  |  | $ | — |
Actual return on plan assets |  |  | 96.8 |  |  |  |  | 60.8 |  |  |  |  | — |  |  |  |  | — |
Total contributions |  |  | 2.1 |  |  |  |  | 2.1 |  |  |  |  | 3.0 |  |  |  |  | 3.8 |
Benefits paid |  |  | (36.5 | ) |  |  |  | (22.9 | ) |  |  |  | (3.0 | ) |  |  |  | (3.8 | )
One-time settlement |  |  | — |  |  |  |  | (24.2 | ) |  |  |  | — |  |  |  |  | — |
Fair value of plan assets at end of year |  | $ | 673.1 |  |  |  |  | 610.7 |  |  |  |  | — |  |  |  |  | — |
Funded status at end of year |  | $ | 72.3 |  |  |  | $ | 58.7 |  |  |  | $ | (50.7 | ) |  |  | $ | (47.9 | )
Summary of Amounts Recognized in Consolidated Balance Sheets | In 2016, we recorded a pension settlement charge of $7.3 million and settled $24.2 million of benefits in connection with a voluntary program offered to deferred vested terminated participants. Amounts recognized in the consolidated balance sheets consist of the following as of December 31:
|  | Pension Benefits |  |  |  | Other Benefits |
In millions |  | 2017 |  |  |  | 2016 |  |  |  | 2017 |  |  |  | 2016 |
Other assets |  | $ | 115.5 |  |  |  | $ | 96.7 |  |  |  | $ | — |  |  |  | $ | — |
Current liabilities |  |  | (2.2 | ) |  |  |  | (2.0 | ) |  |  |  | (3.5 | ) |  |  |  | (3.2 | )
Other long-term liabilities |  |  | (41.0 | ) |  |  |  | (36.0 | ) |  |  |  | (47.2 | ) |  |  |  | (44.7 | )
Net amount recognized |  | $ | 72.3 |  |  |  | $ | 58.7 |  |  |  | $ | (50.7 | ) |  |  | $ | (47.9 | )
Components of Amounts Recognized as Accumulated Other Comprehensive Income on Pre-Tax Basis | The components of amounts recognized as “Accumulated other comprehensive income” consist of the following on a pre-tax basis:
|  | Pension Benefits |  |  |  | Other Benefits |
In millions |  | 2017 |  |  |  | 2016 |  |  |  | 2017 |  |  |  | 2016 |
Prior service cost/(credit) |  | $ | 16.1 |  |  |  | $ | 14.8 |  |  |  | $ | (0.5 | ) |  |  | $ | (0.6 | )
Net actuarial loss |  |  | 145.6 |  |  |  |  | 165.9 |  |  |  |  | (5.6 | ) |  |  |  | (7.4 | )
Weighted-Average Assumptions Used in Computing Benefit Obligations | The weighted-average assumptions used in computing the benefit obligations above were as follows:
|  | Pension Benefits |  |  |  | Other Benefits |
|  | 2017 |  |  |  | 2016 |  |  |  | 2017 |  |  |  | 2016 |
Discount rate – benefit obligation |  |  | 3.85 | % |  |  |  | 4.43 | % |  |  |  | 3.68 | % |  |  |  | 4.18 | %
Future compensation growth rate |  |  | 3.00 |  |  |  |  | 3.00 |  |  |  |  | — |  |  |  |  | — |
Information for Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets | Information for pension plans with an accumulated benefit obligation in excess of plan assets was as follows:
In millions |  | 2017 |  |  |  | 2016 |
Projected benefit obligation |  | $ | 43.1 |  |  |  | $ | 37.9 |
Accumulated benefit obligation |  |  | 38.6 |  |  |  |  | 34.6 |
Fair value of plan assets |  |  | — |  |  |  |  | — |
Schedule of Net Periodic Benefit Cost of Pension and Other Benefits | Net periodic benefit cost includes the following components:
|  | Year Ended December 31 |
In millions |  | 2017 |  |  |  | 2016 |  |  |  | 2015 |
Pension Benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 10.7 |  |  |  | $ | 10.5 |  |  |  | $ | 11.6 |
Interest cost |  |  | 23.8 |  |  |  |  | 24.5 |  |  |  |  | 23.3 |
Expected return on plan assets |  |  | (43.0 | ) |  |  |  | (45.4 | ) |  |  |  | (46.0 | )
Amortization of prior service cost |  |  | 2.8 |  |  |  |  | 2.7 |  |  |  |  | 3.1 |
Amortization of actuarial loss |  |  | 12.3 |  |  |  |  | 13.2 |  |  |  |  | 17.1 |
One-time settlement charge |  |  | — |  |  |  |  | 7.3 |  |  |  |  | — |
Total net periodic benefit cost |  | $ | 6.6 |  |  |  | $ | 12.8 |  |  |  | $ | 9.1 |
Other Benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 1.2 |  |  |  | $ | 1.1 |  |  |  | $ | 1.4 |
Interest cost |  |  | 2.0 |  |  |  |  | 2.0 |  |  |  |  | 2.0 |
Amortization of prior service cost/(credit) |  |  | (0.2 | ) |  |  |  | (0.2 | ) |  |  |  | (0.3 | )
Amortization of actuarial loss |  |  | (0.4 | ) |  |  |  | (0.8 | ) |  |  |  | 0.2 |
Total net periodic benefit cost |  | $ | 2.6 |  |  |  | $ | 2.1 |  |  |  | $ | 3.3 |
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) | Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) were as follows:
|  |  | Year Ended December 31 |
In millions |  |  | 2017 |  |  |  | 2016 |
Pension Benefits |  |  |  |  |  |  |  |  |  |
Actuarial (gain) loss |  |  | $ | (8.3 | ) |  |  | $ | 1.4 |
Plan amendments |  |  |  | 4.1 |  |  |  |  | 5.5 |
Recognized prior service cost |  |  |  | (2.8 | ) |  |  |  | (2.7 | )
Recognized actuarial losses |  |  |  | (12.3 | ) |  |  |  | (20.5 | )
Total recognized in other comprehensive loss |  |  |  | (19.3 | ) |  |  |  | (16.3 | )
Total recognized in net periodic benefit cost and other comprehensive loss |  |  | $ | (12.7 | ) |  |  | $ | (3.5 | )
Other Benefits |  |  |  |  |  |  |  |  |  |
Actuarial (gain) loss |  |  | $ | 1.5 |  |  |  | $ | (3.4 | )
Amortization of prior service cost |  |  |  | 0.2 |  |  |  |  | 0.2 |
Amortization of actuarial losses |  |  |  | 0.4 |  |  |  |  | 0.8 |
Total recognized in other comprehensive (income) loss |  |  |  | 2.1 |  |  |  |  | (2.4 | )
Total recognized in net periodic benefit cost and other comprehensive (income) loss |  |  | $ | 4.7 |  |  |  | $ | (0.3 | )
Schedule of Defined Benefit Plan Weighted-Average Assumptions Used in Computing Net Periodic Benefit Cost | The weighted-average assumptions used in computing the net periodic benefit cost information above were as follows:
|  |  | Year Ended December 31 |
|  |  | 2017 |  |  |  | 2016 |  |  |  | 2015 |
Pension Benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate – benefit expense |  |  |  | 4.43 | % |  |  |  | 4.65 | % |  |  |  | 4.21 | %
Future compensation growth rate |  |  |  | 3.00 |  |  |  |  | 3.50 |  |  |  |  | 4.00 |
Expected long-term rate of return on plan assets |  |  |  | 7.25 |  |  |  |  | 7.75 |  |  |  |  | 8.00 |
Other Benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate – benefit expense |  |  |  | 4.18 | % |  |  |  | 4.38 | % |  |  |  | 3.89 | %
Schedule of Health Care Cost Trend Rates Used in Calculating Benefit Obligations | Assumed health care cost trend rates used to determine benefit obligations at December 31 were as follows:
|  | 2017 |  |  |  | 2016 |
Health care cost trend rate assumed for next year |  |  | 6.20 | % |  |  |  | 6.50 | %
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) |  |  | 4.50 |  |  |  |  | 4.50 |
Year that the rate reaches the ultimate rate |  | 2037 |  |  |  | 2037 |
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates | Assumed health care cost trend rates have a significant effect on the amounts reported for health care plans. A one percentage-point change in assumed health care cost trend rates would have the following effects:
|  | One Percentage Point |
In millions |  | Increase |  |  |  | Decrease |
Effect on: |  |  |  |  |  |  |  |  |
Post-retirement benefit obligation |  | $ | 3.9 |  |  |  | $ | (3.5 | )
Total of service and interest cost components |  |  | 0.3 |  |  |  |  | (0.3 | )
Schedule of Targeted Range of Investment Allocations of Plan Assets | Risk is minimized by diversification by asset class, by style of each manager and by sector and industry limits when applicable. The targeted range of investment allocations of Plan assets is as follows:
|  | Range |
Domestic Equity |  |  | 35 | % |  | - |  | 45 | %
International equity |  | 8 |  |  | - | 14 |
Real Estate Investment Trusts (REIT) |  | 2 |  |  | - | 6 |
Fixed income, cash and cash equivalents |  | 55 |  |  | - | 35 |
Schedule of Fair Value of Benefit Plan Assets | The table below presents the fair values of our benefit plan assets by level within the fair value hierarchy, as described in Note 2:
|  | December 31, 2017 |
In millions |  | Total |  |  |  | Level 1 |  |  |  | Level 2 |  |  |  | Level 3 |
Domestic Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Large cap |  | $ | 214.9 |  |  |  | $ | 12.4 |  |  |  | $ | 202.5 |  |  |  | $ | — |
Small and mid cap |  |  | 46.2 |  |  |  |  | 46.2 |  |  |  |  | — |  |  |  |  | — |
International equity |  |  | 81.4 |  |  |  |  | 7.2 |  |  |  |  | 74.2 |  |  |  |  | — |
REIT |  |  | 27.6 |  |  |  |  | 27.6 |  |  |  |  | — |  |  |  |  | — |
Fixed income |  |  | 290.9 |  |  |  |  | 24.0 |  |  |  |  | 266.9 |  |  |  |  | — |
Cash and equivalents |  |  | 12.1 |  |  |  |  | 0.1 |  |  |  |  | 12.0 |  |  |  |  | — |
Total |  | $ | 673.1 |  |  |  | $ | 117.5 |  |  |  | $ | 555.6 |  |  |  | $ | — |
|  | December 31, 2016 |
In millions |  | Total |  |  |  | Level 1 |  |  |  | Level 2 |  |  |  | Level 3 |
Domestic Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Large cap |  | $ | 201.9 |  |  |  | $ | 7.1 |  |  |  | $ | 194.8 |  |  |  | $ | — |
Small and mid cap |  |  | 50.9 |  |  |  |  | 50.9 |  |  |  |  | — |  |  |  |  | — |
International equity |  |  | 79.5 |  |  |  |  | 38.8 |  |  |  |  | 40.7 |  |  |  |  | — |
REIT |  |  | 27.9 |  |  |  |  | 27.9 |  |  |  |  | — |  |  |  |  | — |
Fixed income |  |  | 237.7 |  |  |  |  | 28.5 |  |  |  |  | 209.2 |  |  |  |  | — |
Cash and equivalents |  |  | 12.8 |  |  |  |  | — |  |  |  |  | 12.8 |  |  |  |  | — |
Total |  | $ | 610.7 |  |  |  | $ | 153.2 |  |  |  | $ | 457.5 |  |  |  | $ | — |
Benefit Payments Expected to be Made under Non-Qualified Pension Plans and Other Benefit Plans | Benefit payments expected to be made in 2018 under our non-qualified pension plans and other benefit plans are summarized below:
In thousands |  |  |  |  |  |  |
Nonqualified pension plans |  |  |  |  | $ | 2,160 |
Other benefit plans |  |  |  |  |  | 3,500 |
Summary of Benefit Expected to be Paid Out | The following benefit payments under all pension and other benefit plans, and giving effect to expected future service, as appropriate, are expected to be paid:
In thousands |  | Pension Benefits |  |  |  | Other Benefits |
2018 |  | $ | 41,106 |  |  |  | $ | 3,500 |
2019 |  |  | 39,993 |  |  |  |  | 4,129 |
2020 |  |  | 39,468 |  |  |  |  | 4,500 |
2021 |  |  | 39,375 |  |  |  |  | 4,663 |
2022 |  |  | 39,041 |  |  |  |  | 4,620 |
2023 through 2027 |  |  | 188,907 |  |  |  |  | 21,053 |

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- Definition Tabular disclosure of the change in the benefit obligation, fair value of plan assets, and funded status of pension plans or other employee benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(b)(c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the assumed health care cost trend rates for the next year used to measure the expected cost of benefits covered by the plans, including the ultimate trend rate(s) and when that rate is expected to be achieved. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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