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Employee Retirement Plans | 3 Months Ended
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Mar. 31, 2019
Employee Retirement Plans [Abstract] |
Employee Retirement Plans | 8. Employee Retirement Plans ﻿ The following table summarizes the components of net periodic benefit cost for Corning’s defined benefit pension and postretirement health care and life insurance plans (in millions):
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Pension benefits |  | Postretirement benefits
﻿ |  | Three months ended |  | Three months ended
﻿ |  | March 31, |  | March 31,
﻿ |  | 2019 |  | 2018 |  | 2019 |  | 2018
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿Service cost |  | $ | 25 |  | $ | 25 |  | $ | 2 |  | $ | 3
﻿Interest cost |  |  | 37 |  |  | 32 |  |  | 7 |  |  | 6
﻿Expected return on plan assets |  |  | (43) |  |  | (47) |  |  |  |  |  |
﻿Amortization of prior service cost (credit) |  |  | 2 |  |  | 2 |  |  | (2) |  |  | (1)
﻿Total pension and postretirement benefit expense |  | $ | 21 |  | $ | 12 |  | $ | 7 |  | $ | 8
﻿ The components of net period benefit cost other than the service cost component are included in the line item “Other expense, net” in the consolidated statements of income.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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