XML 27 R16.htm IDEA: XBRL DOCUMENT
v3.7.0.1

EMPLOYEE BENEFITS | 3 Months Ended
--- | ---
Mar. 31, 2017
Compensation and Retirement Disclosure [Abstract] |
EMPLOYEE BENEFITS | EMPLOYEE BENEFITS The following tables show the components of net periodic pension and OPEB costs for our benefit plans.
|  | Pension Costs
|  | Three Months Ended March 31
(in millions) |  | 2017 |  | 2016
Service cost |  | $ | 11.7 |  |  | $ | 11.3 |
Interest cost |  | 31.2 |  |  | 33.2 |
Expected return on plan assets |  | (49.6 | ) |  | (49.0 | )
Amortization of prior service cost |  | 0.7 |  |  | 0.9 |
Amortization of net actuarial loss |  | 21.9 |  |  | 20.5 |
Net periodic benefit cost |  | $ | 15.9 |  |  | $ | 16.9 |
|  | OPEB Costs
|  | Three Months Ended March 31
(in millions) |  | 2017 |  | 2016
Service cost |  | $ | 6.3 |  |  | $ | 6.7 |
Interest cost |  | 8.5 |  |  | 9.2 |
Expected return on plan assets |  | (13.7 | ) |  | (13.1 | )
Amortization of prior service credit |  | (2.8 | ) |  | (2.3 | )
Amortization of net actuarial loss |  | 1.5 |  |  | 2.3 |
Net periodic benefit (credit) cost |  | $ | (0.2 | ) |  | $ | 2.8 |
During the three months ended March 31, 2017, we made payments of $104.1 million to our pension plans and $1.9 million to our OPEB plans. We expect to make payments of $9.0 million related to our pension plans and $6.5 million related to our OPEB plans during the remainder of 2017, dependent upon various factors affecting us, including our liquidity position and possible tax law changes.

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 The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2410-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39675-114964 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66047640&loc=d3e39622-114963 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration