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Employee Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2021
Employee-related Liabilities [Abstract] |
Components of Net Periodic Benefit Cost | The Company's net periodic benefit cost includes the following components for the three months ended June 30 (in millions):
|  | Pension Benefits |  | Other Postretirement Benefits |  | Affected Line Item in the Statements of Consolidated Operations
|  | 2021 |  | 2020 |  | 2021 |  | 2020 |  |
Service cost |  | $ | 60 |  |  | $ | 53 |  |  | $ | 3 |  |  | $ | 3 |  |  | Salaries and related costs
Interest cost |  | 46 |  |  | 56 |  |  | 7 |  |  | 7 |  |  | Miscellaneous, net
Expected return on plan assets |  | (71) |  |  | (91) |  |  | (1) |  |  | (1) |  |  | Miscellaneous, net
Amortization of unrecognized (gain) loss |  | 42 |  |  | 37 |  |  | (7) |  |  | (11) |  |  | Miscellaneous, net
Amortization of prior service credit |  | — |  |  | — |  |  | (31) |  |  | (31) |  |  | Miscellaneous, net
Special termination benefits |  | — |  |  | 35 |  |  | — |  |  | 125 |  |  | Miscellaneous, net
Settlement loss — Voluntary Programs (defined below) |  | — |  |  | 71 |  |  | — |  |  | — |  |  | Miscellaneous, net
Other |  | 1 |  |  | 11 |  |  | — |  |  | — |  |  | Miscellaneous, net
Total |  | $ | 78 |  |  | $ | 172 |  |  | $ | (29) |  |  | $ | 92 |  |  |
The Company's net periodic benefit cost includes the following components for the six months ended June 30 (in millions):
|  | Pension Benefits |  | Other Postretirement Benefits |  | Affected Line Item in the Statements of Consolidated Operations
|  | 2021 |  | 2020 |  | 2021 |  | 2020 |  |
Service cost |  | $ | 120 |  |  | $ | 107 |  |  | $ | 5 |  |  | $ | 5 |  |  | Salaries and related costs
Interest cost |  | 92 |  |  | 112 |  |  | 13 |  |  | 14 |  |  | Miscellaneous, net
Expected return on plan assets |  | (142) |  |  | (182) |  |  | (1) |  |  | (1) |  |  | Miscellaneous, net
Amortization of unrecognized (gain) loss |  | 85 |  |  | 72 |  |  | (14) |  |  | (22) |  |  | Miscellaneous, net
Amortization of prior service credit |  | — |  |  | — |  |  | (62) |  |  | (62) |  |  | Miscellaneous, net
Special termination benefits |  | — |  |  | 35 |  |  | 46 |  |  | 125 |  |  | Miscellaneous, net
Settlement loss — Voluntary Programs (defined below) |  | — |  |  | 71 |  | — |  |  | — |  |  | Miscellaneous, net
Other |  | 1 |  |  | 14 |  |  | — |  |  | — |  |  | Miscellaneous, net
Total |  | $ | 156 |  |  | $ | 229 |  |  | $ | (13) |  |  | $ | 59 |  |  |
Information Related to Share-Based Compensation | The table below presents information related to share-based compensation (in millions):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Share-based compensation expense | $ | 69 |  |  | $ | 24 |  |  | $ | 103 |  |  | $ | 42 |
| June 30, 2021 |  | December 31, 2020 |  |  |  |
Unrecognized share-based compensation | $ | 191 |  |  | $ | 88 |  |  |  |  |

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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