| Compensation and Retirement Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Compensation and Retirement Disclosure [Abstract] | |
Changes in Projected Benefit Obligations | The following tables summarize the balance sheet impact of the pension benefit plans, as well as the related benefit obligations, assets, funded status and rate assumptions. The pension benefits disclosures include both the qualified, funded Retirement Income Plan (“RIP”) and the Retirement Benefit Equity Plan, which is a nonqualified, unfunded plan designed to provide pension benefits in excess of the limits defined under Sections 415 and 401(a)(17) of the Internal Revenue Code. The disclosures also include our two Canadian pension plans. | | | | | | | | | | U.S. | | Canadian | Defined-benefit pension plans | | | | Change in benefit obligation: | | | | Projected benefit obligations as of January 1, 2016 | $ | — |
| | $ | — |
| Liabilities assumed from separation | 365.2 |
| | 20.2 |
| Service cost | 4.3 |
| | — |
| Interest cost | 11.7 |
| | 0.5 |
| Foreign currency translation adjustment | — |
| | (0.8 | ) | Actuarial (gain) | (6.2 | ) | | (0.5 | ) | Benefits paid | (10.6 | ) | | (2.7 | ) | Projected benefit obligations as of December 31, 2016 | 364.4 |
| | 16.7 |
| | | | | Change in plan assets: | | | | Fair value of plan assets as of January 1, 2016 | — |
| | — |
| Assets received from separation | 362.2 |
| | 19.2 |
| Actual return on plan assets | 11.6 |
| | 0.8 |
| Foreign currency translation adjustment | — |
| | (0.8 | ) | Benefits paid | (10.6 | ) | | (2.7 | ) | Fair value of plan assets as of December 31, 2016 | 363.2 |
| | 16.5 |
| Funded status of the plans | $ | (1.2 | ) | | $ | (0.2 | ) |
| | | | | | | | | | 2016 | | 2015 | U.S. defined-benefit retiree health and life insurance plans | | | | Change in benefit obligation: | | | | Projected benefit obligations as January 1, | $ | 3.5 |
| | $ | 3.1 |
| Liabilities assumed from separation | 82.9 |
| | — |
| Service cost | 0.1 |
| | — |
| Interest cost | 2.7 |
| | 0.1 |
| Plan participants' contributions | 1.6 |
| | — |
| Actuarial loss | 1.1 |
| | 0.3 |
| Benefits paid, gross | (8.3 | ) | | — |
| Projected benefit obligation as of December 31, | 83.6 |
| | 3.5 |
| | | | | Change in plan assets: | | | | Fair value of plan assets as January 1, | — |
| | — |
| Employer contribution | 6.7 |
| | — |
| Plan participants' contribution | 1.6 |
| | — |
| Benefits paid | (8.3 | ) | | — |
| Fair value of plan assets as of December 31, | — |
| | — |
| Funded status of the plans | $ | (83.6 | ) | | $ | (3.5 | ) |
|
Schedule of Assumptions Used | | | | | | | | | U.S. | | Canadian | Defined-benefit pension plans | | | | Weighted average assumptions used to determine benefit obligations as of December 31, 2016: | | | | Discount rate | 4.30 | % | | 3.80 | % | Rate of compensation increase | 3.10 | % | | — |
| Weighted average assumptions used to determine net periodic benefit cost for 2016: | | | | Discount rate | 4.40 | % | | 3.50 | % | Expected return on plan assets | 6.75 | % | | 5.40 | % | Rate of compensation increase | 3.10 | % | | — |
|
| | | | | | | | 2016 | | 2015 | U.S. defined-benefit retiree health and life insurance plans | | | | Weighted average discount rate used to determine benefit obligations as of December 31, | 4.05 | % | | 4.25 | % | Weighted average discount rate used to determine net periodic benefit cost | 4.25 | % | | 3.90 | % |
|
Schedule of Accumulated Benefit Obligations in Excess of Assets | | | | | | | | | | | U.S. | | Canadian | Defined-benefit pension plans with benefit obligations in excess of assets | | | | Projected benefit obligation, December 31, 2016 | $ | 1.4 |
| | $ | 16.1 |
| Accumulated benefit obligation, December 31, 2016 | 1.3 |
| | 16.1 |
| Fair value of plan assets, December 31, 2016 | — |
| | 15.9 |
|
|
Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets | | | | | | | | | | | U.S. | | Canadian | Defined-benefit pension plans with benefit obligations in excess of assets | | | | Projected benefit obligation, December 31, 2016 | $ | 1.4 |
| | $ | 16.1 |
| Accumulated benefit obligation, December 31, 2016 | 1.3 |
| | 16.1 |
| Fair value of plan assets, December 31, 2016 | — |
| | 15.9 |
|
|
Schedule of Net Periodic Pension Cost | The components of the pension cost are as follows: | | | | | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | | 2014 | U.S. defined-benefit pension plans | | | | | | Service cost of benefits earned during the period | $ | 4.3 |
| | $ | — |
| | $ | — |
| Interest cost on projected benefit obligation | 11.7 |
| | — |
| | — |
| Expected return on plan assets | (17.4 | ) | | — |
| | — |
| Amortization of prior service cost | 0.3 |
| | — |
| | — |
| Recognized net actuarial loss | 7.7 |
| | — |
| | — |
| Allocated benefit cost from Shared Plans | 2.2 |
| | 14.8 |
| | 2.6 |
| Net periodic pension cost | $ | 8.8 |
| | $ | 14.8 |
| | $ | 2.6 |
|
NOTE 15. PENSION AND OTHER POSTRETIREMENT BENEFIT PROGRAMS (continued) | | | | | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | | 2014 | Canadian defined-benefit pension plans | | | | | | Interest cost on projected benefit obligation | $ | 0.5 |
| | $ | — |
| | $ | — |
| Expected return on plan assets | (0.8 | ) | | — |
| | — |
| Amortization of net actuarial loss | 0.2 |
| | — |
| | — |
| Allocated benefit cost from Shared Plans | 0.1 |
| | 0.3 |
| | — |
| Net periodic pension cost | $ | — |
| | $ | 0.3 |
| | $ | — |
|
The components of postretirement benefits costs are as follows: | | | | | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | | 2014 | U.S. defined-benefit retiree health and life insurance plans | | | | | | Service cost of benefits earned during the period | $ | 0.1 |
| | $ | — |
| | $ | — |
| Interest cost on accumulated postretirement benefit obligations | 2.7 |
| | 0.1 |
| | 0.1 |
| Amortization of prior service (credit) | (0.2 | ) | | — |
| | — |
| Amortization of net actuarial (gain) | (3.2 | ) | | — |
| | — |
| Allocated benefit cost (credit) from Shared Plans | (0.3 | ) | | 0.7 |
| | 4.2 |
| Net periodic postretirement benefit cost | $ | (0.9 | ) | | $ | 0.8 |
| | $ | 4.3 |
|
|
Schedule of Allocation of Plan Assets | Each asset class used has a defined asset allocation target and allowable range. The table below shows the asset allocation target and the December 31, 2016 position for each asset class: | | | | | | | | Target Weight at | | Position at | | December 31, 2016 | | December 31, 2016 | U.S. Asset Class | | | | Fixed income securities | 60 | % | | 60 | % | Equities | 40 | % | | 40 | % |
| | | | | | | | Target Weight at | | Position at | | December 31, 2016 | | December 31, 2016 | Canadian Asset Class | | | | Fixed income securities | 50 | % | | 49 | % | Equities | 48 | % | | 48 | % | Other | 2 | % | | 3 | % |
| | | | | | | | | | | | | | | | | | Value at December 31, 2016 | | Level 1 | | Level 2 | | Level 3 | | Total | U.S. Plans | | | | | | | | Fixed income securities | $ | — |
| | $ | 219.1 |
| | $ | — |
| | $ | 219.1 |
| Equities | — |
| | 144.1 |
| | — |
| | 144.1 |
| Net assets measured at fair value | $ | — |
| | $ | 363.2 |
| | $ | — |
| | $ | 363.2 |
|
| | | | | | | | | | | | | | | | | | Value at December 31, 2016 | | Level 1 | | Level 2 | | Level 3 | | Total | Canadian Plans | | | | | | | | Fixed income securities | $ | — |
| | $ | 8.1 |
| | $ | — |
| | $ | 8.1 |
| Equities | — |
| | 7.9 |
| | — |
| | 7.9 |
| Other | 0.5 |
| | — |
| | — |
| | 0.5 |
| Net assets measured at fair value | $ | 0.5 |
| | $ | 16.0 |
| | $ | — |
| | $ | 16.5 |
|
|
Schedule of 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 the following effects for 2017: | | | | | | | | | | One percentage point | | Increase | | Decrease | U.S. defined-benefit retiree health and life insurance plans | | | | Effect on total service and interest cost components | $ | — |
| | $ | — |
| Effect on postretirement benefit obligation | (2.1 | ) | | 1.7 |
|
|
Schedule of Assets and (Liabilities) Recognized in Balance Sheet | Amounts recognized in assets and (liabilities) on the consolidated balance sheets at year end consist of: | | | | | | | | | | U.S. Pension Benefits | | Canadian Pension Benefits | | 2016 | | 2016 | Prepaid pension costs | $ | 0.1 |
| | $ | 0.1 |
| Pension benefit liabilities | (1.3 | ) | | (0.3 | ) | Net amount recognized | $ | (1.2 | ) | | $ | (0.2 | ) |
| | | | | | | | | | Retiree Health and Life Insurance Benefits | | 2016 | | 2015 | Accounts payable and accrued expenses | $ | (8.1 | ) | | $ | (0.2 | ) | Postretirement benefit liabilities | (75.5 | ) | | (3.3 | ) | Net amount recognized | $ | (83.6 | ) | | $ | (3.5 | ) |
|
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) | Pre-tax amounts recognized in accumulated other comprehensive (loss) income at year end consist of: | | | | | | | | | | U.S. Pension Benefits | | Canadian Pension Benefits | | 2016 | | 2016 | Net actuarial (loss) | $ | (132.2 | ) | | $ | (2.9 | ) | Prior service (cost) | (0.5 | ) | | — |
| Accumulated other comprehensive (loss) | $ | (132.7 | ) | | $ | (2.9 | ) |
| | | | | | | | | | Retiree Health and Life Insurance Benefits | | 2016 | | 2015 | Net actuarial gain (loss) | $ | 37.0 |
| | $ | (0.6 | ) |
|
Schedule of Expected Future Benefit Payments | The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid over the next ten years for our U.S. plans: | | | | | | | | | | | | | | | | | | U.S. Pension Benefits | | Canadian Pension Benefits | | Retiree Health and Life Insurance Benefits, Gross | | Retiree Health Medicare Subsidy Receipts | 2017 | $ | 15.2 |
| | $ | 1.5 |
| | $ | 8.3 |
| | $ | (0.1 | ) | 2018 | 16.2 |
| | 1.4 |
| | 7.9 |
| | (0.1 | ) | 2019 | 17.3 |
| | 1.3 |
| | 7.5 |
| | (0.1 | ) | 2020 | 18.5 |
| | 1.3 |
| | 7.0 |
| | (0.1 | ) | 2021 | 19.5 |
| | 1.3 |
| | 6.6 |
| | (0.1 | ) | 2022-2026 | 110.3 |
| | 5.8 |
| | 27.9 |
| | (0.5 | ) |
|