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v3.23.3

Debt and lines of credit - Additional Information (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
May 31, 2023 USD ($) series | Mar. 31, 2023 USD ($) series | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Commercial paper |  |  | $ 0 |  | $ 0 |
Proceeds from issuance of long-term debt |  |  |  |  | 3,000,000,000 | $ 695,000,000
Repayment of debt |  |  |  |  | 500,000,000 | 500,000,000
Interest and debt expense |  |  | $ 98,000,000 | $ 53,000,000 | $ 255,000,000 | $ 154,000,000
Notes due 2028 at 4.60% |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt stated interest rate (in percentage) |  |  | 4.60% |  | 4.60% |
Notes due 2033 at 4.90% |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt stated interest rate (in percentage) |  |  | 4.90% |  | 4.90% |
Notes due 2063 at 5.05% |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt stated interest rate (in percentage) |  |  | 5.05% |  | 5.05% |
Notes due 2023 at 2.25% |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt stated interest rate (in percentage) |  |  | 2.25% |  | 2.25% |
Repayment of debt | $ 500,000,000 |  |  |  |  |
Notes due 2053 at 5.00% |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt stated interest rate (in percentage) |  |  | 5.00% |  | 5.00% |
Senior unsecured notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Number of series of debt issued | series | 3 | 2 |  |  |  |
Principal amount | $ 1,600,000,000 | $ 1,400,000,000 |  |  |  |
Debt issuance costs | 7,000,000 | 11,000,000 |  |  |  |
Proceeds from issuance of long-term debt | 1,600,000,000 | 1,400,000,000 |  |  |  |
Senior unsecured notes | Notes due 2028 at 4.60% |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount | $ 200,000,000 |  |  |  |  |
Long-term debt stated interest rate (in percentage) | 4.60% |  |  |  |  |
Senior unsecured notes | Notes due 2033 at 4.90% |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount | $ 200,000,000 | $ 750,000,000 |  |  |  |
Long-term debt stated interest rate (in percentage) | 4.90% | 4.90% |  |  |  |
Senior unsecured notes | Notes due 2063 at 5.05% |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount | $ 1,200,000,000 |  |  |  |  |
Long-term debt stated interest rate (in percentage) | 5.05% |  |  |  |  |
Senior unsecured notes | Notes due 2053 at 5.00% |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount |  | $ 650,000,000 |  |  |  |
Long-term debt stated interest rate (in percentage) |  | 5.00% |  |  |  |
Revolving credit facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | $ 1,000,000,000 |  | $ 1,000,000,000 |

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