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v3.21.2

Pension and Other Postretirement Benefits (Tables) | 6 Months Ended
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Jun. 30, 2021
Retirement Benefits [Abstract] |
Schedule of Net Benefit Costs [Table Text Block] | The components of net periodic pension and retiree medical cost were as follows (in millions):
| Successor |  |  | Predecessor |  |  |  |
| Two Months Ended June 30, 2021 |  |  | One Month Ended April 30, 2021 |  | Three Months Ended June 30, 2020 |  |  |  |
Service cost (1) | $ | — |  |  |  | $ | — |  |  | $ | .7 |  |  |  |  |
Interest cost (2) | 3.8 |  |  |  | 1.6 |  |  | 6.4 |  |  |  |  |
Expected return on plan assets(2) | (6.2) |  |  |  | (3.0) |  |  | (9.5) |  |  |  |  |
Net periodic pension and retiree medical cost (income) | $ | (2.4) |  |  |  | $ | (1.4) |  |  | $ | (2.4) |  |  |  |  |
| Successor |  |  | Predecessor
| Two Months Ended June 30, 2021 |  |  | Four Months Ended April 30, 2021 |  | Six Months Ended June 30, 2020
Service cost (1) | $ | — |  |  |  | $ | — |  |  | $ | 1.3 |
Interest cost (2) | 3.8 |  |  |  | 6.6 |  |  | 12.9 |
Expected return on plan assets(2) | (6.2) |  |  |  | (12.1) |  |  | (19.0) |
Amortization of net loss (2) | — |  |  |  | .1 |  |  | — |
Net periodic pension and retiree medical cost (income) | $ | (2.4) |  |  |  | $ | (5.4) |  |  | $ | (4.8) |
(1)Included in contract drilling and general and administrative expense in our Condensed Consolidated Statements of Operations. (2)Included in other, net, in our Condensed Consolidated Statements of Operations.

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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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