Financial Assets & Liabilities - Fair Value Measurements (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Financial assets and financial liabilities measured at fair value on a recurring basis:
Debt securities - current	$ 3,286	$ 644
Disposal Group, Disposed of by Sale, Not Discontinued Operations | The Weather Company
Financial assets and financial liabilities measured at fair value on a recurring basis:
Financing receivable		100
Fair Value, Recurring
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	6,339	6,948
Total assets	10,284	8,386
Total liabilities	608	726
Fair Value, Recurring | Prepaid Expenses and Other Current Assets
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	303	575
Fair Value, Recurring | Other Noncurrent Assets
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	348	96
Fair Value, Recurring | Other Current Liabilities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative liabilities	366	262
Fair Value, Recurring | Other Noncurrent Liabilities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative liabilities	242	463
Fair Value, Recurring | Level 1 | Money market funds
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	575	284
Fair Value, Recurring | Level 2
Financial assets and financial liabilities measured at fair value on a recurring basis:
Debt securities - current	3,286	644
Fair Value, Recurring | Level 2 | Interest rate contracts
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivatives designated as hedging - Assets	2	0
Derivatives designated as hedging - Liabilities	192	362
Fair Value, Recurring | Level 2 | Foreign exchange contracts
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivatives designated as hedging - Assets	569	645
Derivatives designated as hedging - Liabilities	405	294
Derivatives not designated as hedging - Assets	13	22
Derivatives not designated as hedging - Liabilities	10	43
Fair Value, Recurring | Level 2 | Equity contracts
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivatives not designated as hedging - Assets	66	4
Derivatives not designated as hedging - Liabilities	1	27
Fair Value, Recurring | Level 2 | Time deposits and certificates of deposit
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	5,764	6,663
Fair Value, Recurring | Level 2 And 3
Financial assets and financial liabilities measured at fair value on a recurring basis:
Debt securities - noncurrent	$ 9	$ 124