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Investments in Equity Securities (Investment in ABI Narrative) (Details) shares in Thousands, $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 19, 2024 | Mar. 14, 2024 shares | Mar. 31, 2024 USD ($) shares | Jun. 30, 2024 USD ($) board_member shares | Jun. 30, 2024 USD ($) board_member shares | Jun. 30, 2023 USD ($) | Mar. 13, 2024 shares | Dec. 31, 2023 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Conversion of stock, shares converted (in shares) | shares |  |  | 60,000 |  |  |  |  |  |
Proceeds from the ABI Transaction | [1] |  |  |  |  | $ 2,353 | $ 0 |  |
ABI [Member] |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 8.10% | 8.10% |  | 10.00% |
Number of restricted shares owned (in shares) | shares |  |  |  |  | 125,000 | 125,000 |  | 185,000 |
Number of ordinary shares owned (in shares) | shares |  |  |  |  | 34,000 | 34,000 |  | 12,000 |
Conversion ratio |  |  | 1 |  |  |  |  |  |
Proceeds from the ABI Transaction |  |  |  |  | $ 2,400 |  |  |  |
Equity method investment, disposal, transaction costs |  |  |  |  | $ 62 | $ 62 |  |  |
Pre-tax gain on partial sale of investment |  |  |  |  |  | 408 |  |  |
Reclassification from AOCI |  |  |  |  |  | (243) |  |  |
Effective income tax rate reconciliation, release of valuation allowance, amount |  |  |  |  |  | $ 94 |  |  |
Number of board members | board_member |  |  |  |  | 2 | 2 |  |  |
ABI [Member] | Marketing Administration And Research Costs [Member] |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, disposal, transaction costs |  |  |  |  |  | $ 59 |  |  |
ABI [Member] | Interest Income (Expense), Net [Member] |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, disposal, transaction costs |  |  |  |  |  | 3 |  |  |
ABI [Member] | Secondary Offering [Member] |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction (shares) | shares |  |  |  | 35,000 |  |  |  |  |
Sale of stock, consideration received on transaction |  |  |  | $ 2,200 |  |  |  |  |
Sale of stock, lock up period |  | 180 days |  | 180 days |  |  |  |  |
Equity method investment, number of shares owned | shares |  |  |  | 159,000 |  |  |  |  |
ABI [Member] | Over-Allotment Option [Member] |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction (shares) | shares |  |  |  | 5,250 |  |  |  |  |
ABI [Member] | Private Placement to ABI |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction (shares) | shares |  |  |  | 3,300 |  |  |  |  |
Sale of stock, consideration received on transaction |  |  |  | $ 200 |  |  |  |  |
Fair Value, Inputs, Level 1 [Member] | ABI [Member] |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Fair value of equity investment |  |  |  |  | $ 9,200 | 9,200 |  |  | $ 12,700
Equity method investment, difference between carrying amount and fair value |  |  |  |  | $ 8,000 | $ 8,000 |  |  | $ 9,700
Equity method investment, difference between carrying amount and fair value, percentage (approximately) |  |  |  |  | 15.00% | 15.00% |  |  | 32.00%
Equity method investment, difference between net assets attributable to equity holders and carrying amount |  |  |  |  | $ 1,900 | $ 1,900 |  |  | $ (600)
[1] | For further discussion of the ABI Transaction, see Note 6. Investments in Equity Securities.

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