XML 41 R31.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Employee Benefit Plans (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] |
Schedule of Net Benefit (Credits) Costs [Table Text Block] | The components of net periodic benefit cost (credit) are as follows:
|  | Pension Benefits
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2017 |  | 2016 |  | 2017 |  | 2016
|  | (in millions)
Service cost |  | $ | 0.7 |  |  | $ | 0.8 |  |  | $ | 2.6 |  |  | $ | 2.3 |
Interest cost |  | 7.2 |  |  | 7.3 |  |  | 21.4 |  |  | 21.9 |
Expected asset return |  | (11.1 | ) |  | (10.7 | ) |  | (32.7 | ) |  | (32.1 | )
Amortized loss |  | 1.9 |  |  | 1.3 |  |  | 5.4 |  |  | 4.1 |
Amortized prior service cost (credit) |  | (0.1 | ) |  | — |  |  | (0.1 | ) |  | — |
Settlement |  | 2.9 |  |  | — |  |  | 2.9 |  |  | — |
Net periodic benefit cost (credit) |  | $ | 1.5 |  |  | $ | (1.3 | ) |  | $ | (0.5 | ) |  | $ | (3.8 | )
|  | Other Postretirement Benefits
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2017 |  | 2016 |  | 2017 |  | 2016
|  | (in millions)
Service cost |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.3 |  |  | $ | 0.3 |
Interest cost |  | 3.3 |  |  | 3.5 |  |  | 9.9 |  |  | 10.5 |
Amortized loss |  | 0.2 |  |  | 0.1 |  |  | 0.5 |  |  | 0.3 |
Amortized prior service credit |  | (0.8 | ) |  | (0.7 | ) |  | (2.1 | ) |  | (2.0 | )
Net periodic benefit cost |  | $ | 2.8 |  |  | $ | 3.0 |  |  | $ | 8.6 |  |  | $ | 9.1 |

X
- References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration