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Pension Benefits | 6 Months Ended
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Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract] |
Pension Benefits | PENSION BENEFITS Certain of Delphi’s non-U.S. subsidiaries sponsor defined benefit pension plans, which generally provide benefits based on negotiated amounts for each year of service. Delphi’s primary non-U.S. plans are located in France, Germany, Mexico, Portugal and the United Kingdom (“U.K.”). The U.K. and certain Mexican plans are funded. In addition, Delphi has defined benefit plans in South Korea, Turkey and Italy for which amounts are payable to employees immediately upon separation. The obligations for these plans are recorded based on the vested obligation. Delphi sponsors a Supplemental Executive Retirement Program (“SERP”) for those employees who were U.S. executives of the Predecessor prior to September 30, 2008 and were U.S. executives of Delphi on October 7, 2009, the effective date of the program. This program is unfunded. Executives receive benefits over 5 years after an involuntary or voluntary separation from Delphi. The SERP is closed to new members. The amounts shown below reflect the defined benefit pension expense for the three and six months ended June 30, 2014 and 2013:
| Non-U.S. Plans |  | U.S. Plans
| Three Months Ended June 30,
| 2014 |  | 2013 |  | 2014 |  | 2013
| (in millions)
Service cost | $ | 16 |  |  | $ | 15 |  |  | $ | — |  |  | $ | — |
Interest cost | 26 |  |  | 21 |  |  | 1 |  |  | 1 |
Expected return on plan assets | (21 | ) |  | (18 | ) |  | — |  |  | — |
Amortization of actuarial losses | 2 |  |  | 2 |  |  | — |  |  | — |
Net periodic benefit cost | $ | 23 |  |  | $ | 20 |  |  | $ | 1 |  |  | $ | 1 |
| Non-U.S. Plans |  | U.S. Plans
| Six Months Ended June 30,
| 2014 |  | 2013 |  | 2014 |  | 2013
| (in millions)
Service cost | $ | 30 |  |  | $ | 28 |  |  | $ | — |  |  | $ | — |
Interest cost | 50 |  |  | 43 |  |  | 1 |  |  | 1 |
Expected return on plan assets | (40 | ) |  | (35 | ) |  | — |  |  | — |
Amortization of actuarial losses | 4 |  |  | 4 |  |  | — |  |  | — |
Net periodic benefit cost | $ | 44 |  |  | $ | 40 |  |  | $ | 1 |  |  | $ | 1 |
Other postretirement benefit obligations were approximately $7 million and $7 million at June 30, 2014 and December 31, 2013, respectively.

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- 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 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 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=35743120&loc=d3e2410-114920 Reference 3: 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=35742057&loc=SL14450702-114947 Reference 4: 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=6414199&loc=d3e39622-114963 Reference 5: 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 + Details
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