XML 73 R19.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Retirement Plans and Postretirement Benefit Plans | 9 Months Ended
--- | ---
Sep. 30, 2013
Retirement Plans and Postretirement Benefit Plans [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | Retirement Plans and Postretirement Benefit Plans The details of net periodic benefit cost of the Company's Pension Plan, the Restoration of Retirement Income Plan and the postretirement benefit plans included in the Condensed Consolidated Financial Statements are as follows: Net Periodic Benefit Cost
| Pension Plan |  | Restoration of Retirement Income Plan
| Three Months Ended | Nine Months Ended |  | Three Months Ended | Nine Months Ended
| September 30, | September 30, |  | September 30, | September 30,
(In millions) | 2013 (B) | 2012 (B) | 2013 (C) | 2012 (C) |  | 2013 (B) | 2012 (B) | 2013 (C) | 2012 (C)
Service cost | $ | 4.8 |  | $ | 4.5 |  | $ | 14.3 |  | $ | 13.5 |  |  | $ | 0.3 |  | $ | 0.3 |  | $ | 0.9 |  | $ | 0.8 |
Interest cost | 6.6 |  | 7.5 |  | 20.0 |  | 22.5 |  |  | 0.1 |  | 0.1 |  | 0.4 |  | 0.4 |
Expected return on plan assets | (12.1 | ) | (11.5 | ) | (36.3 | ) | (34.5 | ) |  | — |  | — |  | — |  | — |
Amortization of net loss | 6.6 |  | 6.0 |  | 19.8 |  | 17.9 |  |  | 0.1 |  | 0.1 |  | 0.3 |  | 0.3 |
Amortization of unrecognized prior service cost (A) | 0.5 |  | 0.5 |  | 1.4 |  | 1.6 |  |  | 0.1 |  | 0.2 |  | 0.2 |  | 0.5 |
Total net periodic benefit cost | 6.4 |  | 7.0 |  | 19.2 |  | 21.0 |  |  | 0.6 |  | 0.7 |  | 1.8 |  | 2.0 |
Less: Amount paid by unconsolidated affiliates | 1.5 |  | — |  | 2.5 |  | — |  |  | 0.1 |  | — |  | 0.1 |  | — |
Net periodic benefit cost (net of unconsolidated affiliates) | $ | 4.9 |  | $ | 7.0 |  | $ | 16.7 |  | $ | 21.0 |  |  | $ | 0.5 |  | $ | 0.7 |  | $ | 1.7 |  | $ | 2.0 |
(A) | Unamortized prior service cost is amortized on a straight-line basis over the average remaining service period to the first eligibility age of participants who are expected to receive a benefit and are active at the date of the plan amendment.
(B) | In addition to the $5.4 million and $7.7 million of net periodic benefit cost recognized during the three months ended September 30, 2013 and 2012, respectively, OG&E recognized an increase in pension expense during the three months ended September 30, 2013 and 2012 of $1.5 million and $1.9 million, respectively, to maintain the allowable amount to be recovered for pension expense in the Oklahoma jurisdiction which are included in the Pension tracker regulatory liability (see Note 1).
(C) | In addition to the $18.4 million and $23.0 million of net periodic benefit cost recognized during the nine months ended September 30, 2013 and 2012, respectively, OG&E recognized an increase in pension expense during the nine months ended September 30, 2013 and 2012 of $4.6 million and $7.6 million, respectively, to maintain the allowable amount to be recovered for pension expense in the Oklahoma jurisdiction which are included in the Pension tracker regulatory liability (see Note 1).
| Postretirement Benefit Plans
| Three Months Ended | Nine Months Ended
| September 30, | September 30,
(In millions) | 2013 (B) | 2012 (B) | 2013 (C) | 2012 (C)
Service cost | $ | 1.1 |  | $ | 1.0 |  | $ | 3.3 |  | $ | 3.1 |
Interest cost | 2.5 |  | 2.9 |  | 7.7 |  | 8.9 |
Expected return on plan assets | (0.6 | ) | (0.8 | ) | (1.9 | ) | (2.3 | )
Amortization of transition obligation | — |  | 0.7 |  | — |  | 2.1 |
Amortization of net loss | 5.4 |  | 5.2 |  | 16.1 |  | 15.4 |
Amortization of unrecognized prior service cost (A) | (4.1 | ) | (4.1 | ) | (12.4 | ) | (12.4 | )
Total net periodic benefit cost | 4.3 |  | 4.9 |  | 12.8 |  | 14.8 |
Less: Amount paid by unconsolidated affiliates | 0.6 |  | — |  | 1.0 |  | — |
Net periodic benefit cost (net of unconsolidated affiliates) | $ | 3.7 |  | $ | 4.9 |  | $ | 11.8 |  | $ | 14.8 |
(A) | Unamortized prior service cost is amortized on a straight-line basis over the average remaining service period to the first eligibility age of participants who are expected to receive a benefit and are active at the date of the plan amendment.
(B) | In addition to the $3.7 million and $4.9 million of net periodic benefit cost recognized during the three months ended September 30, 2013 and 2012, respectively, OG&E recognized an increase in postretirement medical expense during the three months ended September 30, 2013 and 2012 of $0.1 million and $0.1 million, respectively, to maintain the allowable amount to be recovered for postretirement medical expense in the Oklahoma jurisdiction which are included in the Pension tracker regulatory liability (see Note 1).
(C) | In addition to the $11.8 million and $14.8 million of net periodic benefit cost recognized during the nine months ended September 30, 2013 and 2012, respectively, OG&E recognized an increase in postretirement medical expense during the nine months ended September 30, 2013 and 2012 of $0.4 million and $0.8 million, respectively, to maintain the allowable amount to be recovered for postretirement medical expense in the Oklahoma jurisdiction which are included in the Pension tracker regulatory liability (see Note 1).
The capitalized portion of net periodic pension benefit cost was $1.1 million and $3.7 million during the three and nine months ended September 30, 2013 as compared to $1.6 million and $4.7 million during the same period in 2012. The capitalized portion of net periodic postretirement benefit cost was $0.7 million and $2.3 million during the three and nine months ended September 30, 2013 as compared to $1.0 million and $3.0 million during the same period in 2012. Pension Plan Funding The Company previously reported in its 2012 Form 10-K that it may contribute up to $35 million to its Pension Plan during 2013. In May 2013, the Company contributed $35 million to its Pension Plan. No additional contributions are expected in 2013.

X
- Details
Name: | oge_RetirementPlansAndPostretirementBenefitPlansAbstract
Namespace Prefix: | oge_
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 -URI http://asc.fasb.org/topic&trid=2235017 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration