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Post-retirement Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2021
Retirement Benefits [Abstract] |
Components of net periodic benefit cost and other amounts recognized in other comprehensive income | The components of net periodic benefit cost for our defined benefit pension plans are as follows:
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
(in millions) | 2021 |  | 2020 |  | 2021 |  | 2020
Domestic defined benefit pension plans: |  |  |  |  |  |  |
Service cost | $ | — |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 2 |
Interest cost | 1 |  |  | 1 |  |  | 2 |  |  | 2 |
Expected return on plan assets | (1) |  |  | (2) |  |  | (3) |  |  | (4) |
Amortization of net actuarial loss | 1 |  |  | 1 |  |  | 2 |  |  | 2 |
Net periodic benefit cost | $ | 1 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | 2 |
International defined benefit pension plans: |  |  |  |  |  |  |
Service cost | $ | 3 |  |  | $ | 3 |  |  | $ | 7 |  |  | $ | 6 |
Interest cost | 3 |  |  | 3 |  |  | 6 |  |  | 6 |
Expected return on plan assets | (3) |  |  | (3) |  |  | (7) |  |  | (6) |
Amortization of net actuarial loss | 4 |  |  | 3 |  |  | 8 |  |  | 6 |
Net periodic benefit cost | $ | 7 |  |  | $ | 6 |  |  | $ | 14 |  |  | $ | 12 |
Total net periodic benefit cost | $ | 8 |  |  | $ | 7 |  |  | $ | 16 |  |  | $ | 14 |

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- Definition Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + 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 (i) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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