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Employee Benefit Plans Level 1 (Notes) | 3 Months Ended
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Mar. 31, 2017
Compensation and Retirement Disclosure [Abstract] |
Employee Benefit Plans | Company’s employee benefit plans are described in Note 18 - Employee Benefit Plans of Notes to Consolidated Financial Statements included in The Hartford’s 2016 Annual Report on Form 10-K. Beginning with the first quarter of 2017, the Company adopted the full yield curve approach in the estimation of the interest cost component of net periodic benefit costs for its qualified and non-qualified pension plans and the postretirement benefit plan. The full yield curve approach applies the specific spot rates along the yield curve that are used in its determination of the projected benefit obligation at the beginning of the year. The change has been made to provide a better estimate of the interest cost component of net periodic benefit cost by better aligning projected benefit cash flows with corresponding spot rates on the yield curve rather than using a single weighted average discount rate derived from the yield curve as had been done historically. This change does not affect the measurement of the Company's total benefit obligations as the change in the interest cost in net income is completely offset in the actuarial (gain) loss reported for the period in other comprehensive income. The change reduced the interest cost component of net periodic benefit cost in the first quarter of 2017 by $9 before tax. The discount rate being used to measure interest cost during 2017 is 3.58%, 3.55% and 3.13% for the qualified pension plan, non-qualified pension plan and postretirement benefit plan, respectively. Under the Company's historical estimation approach, the weighted average discount rate for the interest cost component would have been 4.22%, 4.19% and 3.97% for the qualified pension plan, non-qualified pension plan and postretirement benefit plan, respectively. The Company accounted for the change in estimation approach as a change in estimate, and accordingly, is recognizing the effect prospectively beginning in 2017.
Components of Net Periodic Cost (Benefit)
| Pension Benefits | Other Postretirement Benefits
| Three Months Ended March 31, | Three Months Ended March 31,
| 2017 | 2016 | 2017 | 2016
Service cost | $ | 1 |  | $ | — |  | $ | — |  | $ | — |
Interest cost | 49 |  | 59 |  | 2 |  | 3 |
Expected return on plan assets | (79 | ) | (77 | ) | (2 | ) | (2 | )
Amortization of prior service credit | — |  | — |  | (1 | ) | (2 | )
Amortization of actuarial loss | 15 |  | 14 |  | 1 |  | 1 |
Net periodic benefit | $ | (14 | ) | $ | (4 | ) | $ | — |  | $ | — |

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References No definition available. + Details
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- References No definition available. + Details
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