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Employee Benefit Plans - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Jan. 03, 2022
Multiemployer Plans [Line Items] |  |  |  |  |
Benefit obligations |  |  |  |  | $ 2,041,000,000
Net periodic cost | $ (6,000,000) |  | $ (15,000,000) |  |
PBO discount rate | 1.90% |  | 1.90% |  |
Net cost discount rate | 1.70% |  |  |  |
Expected benefit payment in 2023 | $ 94,000,000 |  | $ 94,000,000 |  |
Expected benefit payment in 2024 | 95,000,000 |  | 95,000,000 |  |
Expected benefit payment in 2025 | 96,000,000 |  | 96,000,000 |  |
Expected benefit payment in 2026 | 95,000,000 |  | 95,000,000 |  |
Expected benefit payment in 2028 and thereafter | 502,000,000 |  | $ 502,000,000 |  |
Employee Stock [Member] |  |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |  |
Share-based compensation arrangement by share-based payment award, purchase price of common stock, percent |  |  | 85.00% |  |
Maximum number of shares purchased in offering period |  |  | 500 |  |
Maximum value of common stock purchased during period under ESPP |  |  | $ 10,000,000,000 |  |
Expense related to ESPP | 1,000,000 | $ 1,000,000 | 2,000,000 | $ 2,000,000 |
Multiemployer Pension And Other Multiemployer Benefit Plans And Trusts [Member] |  |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |  |
Multiemployer Plan Contributions | 27,000,000 | 24,000,000 | 51,000,000 | 43,000,000 |
Profit Sharing Plan [Member] |  |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |  |
Expense recognized | 4,000,000 | $ 4,000,000 | 6,000,000 | $ 7,000,000 |
Post-retirement Benefit Plans [Member] |  |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |  |
Benefit obligations | $ 4,000,000 |  | $ 4,000,000 |  |
PBO discount rate | 3.00% |  | 3.00% |  |
Post-retirement Benefit Plans [Member] | Maximum [Member] |  |  |  |  |
Multiemployer Plans [Line Items] |  |  |  |  |
Expected benefit payment in 2023 | $ 1,000,000 |  | $ 1,000,000 |  |
Expected benefit payment in 2024 | 1,000,000 |  | 1,000,000 |  |
Expected benefit payment in 2025 | 1,000,000 |  | 1,000,000 |  |
Expected benefit payment in 2026 | 1,000,000 |  | 1,000,000 |  |
Expected benefit payment in 2027 | 1,000,000 |  | 1,000,000 |  |
Expected benefit payment in 2028 and thereafter | $ 1,000,000 |  | $ 1,000,000 |  |

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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