XML 47 R34.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Pension and Other Postretirement Benefit Plans (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract] |
Components of Net Periodic Benefit Expense (Income) [Table Text Block] |
| Pension |  | Other Postretirement
Components of Net Periodic Benefit Expense (Income) | 2016 |  | 2015 |  | 2016 |  | 2015
Millions |  |  |  |  |  |  |
Quarter Ended June 30, |  |  |  |  |  |  |
Service Cost |  | $2.1 |  |  |  | $2.5 |  |  |  | $1.0 |  |  |  | $1.1 |
Interest Cost | 8.1 |  |  | 7.4 |  |  | 1.8 |  |  | 1.8 |
Expected Return on Plan Assets | (10.7 | ) |  | (10.1 | ) |  | (2.8 | ) |  | (2.8 | )
Amortization of Prior Service Costs (Credits) | — |  |  | 0.1 |  |  | (0.8 | ) |  | (0.7 | )
Amortization of Net Loss | 2.5 |  |  | 4.5 |  |  | 0.1 |  |  | 0.1 |
Net Periodic Benefit Expense (Income) |  | $2.0 |  |  |  | $4.4 |  |  | $(0.7) |  | $(0.5)
Six Months Ended June 30, |  |  |  |  |  |  |
Service Cost |  | $4.1 |  |  |  | $5.0 |  |  |  | $2.0 |  |  |  | $2.2 |
Interest Cost | 16.2 |  |  | 14.9 |  |  | 3.7 |  |  | 3.6 |
Expected Return on Plan Assets | (21.3 | ) |  | (20.3 | ) |  | (5.6 | ) |  | (5.5 | )
Amortization of Prior Service Costs (Credits) | — |  |  | 0.1 |  |  | (1.5 | ) |  | (1.5 | )
Amortization of Net Loss | 4.9 |  |  | 9.0 |  |  | 0.1 |  |  | 0.2 |
Net Periodic Benefit Expense (Income) |  | $3.9 |  |  |  | $8.7 |  |  | $(1.3) |  | $(1.0)

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
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=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration