Financial Assets & Liabilities - Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Financial assets and financial liabilities measured at fair value on a recurring basis:
Debt securities - current	$ 6,430	$ 644
Discontinued Operations, Disposed of by Sale | The Weather Company
Financial assets and financial liabilities measured at fair value on a recurring basis:
Financing receivable	100		$ 100
Fair Value, Recurring
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	6,775	6,948
Total assets	13,752	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	264	575
Fair Value, Recurring | Other Noncurrent Assets
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	125	96
Fair Value, Recurring | Other Current Liabilities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative liabilities	276	262
Fair Value, Recurring | Other Noncurrent Liabilities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative liabilities	332	463
Fair Value, Recurring | Level 1
Financial assets and financial liabilities measured at fair value on a recurring basis:
Equity investments	0	0
Fair Value, Recurring | Level 1 | Money market funds
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	716	284
Fair Value, Recurring | Level 2
Financial assets and financial liabilities measured at fair value on a recurring basis:
Debt securities - current	6,430	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	1	0
Derivatives designated as hedging - Liabilities	273	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	342	645
Derivatives designated as hedging - Liabilities	253	294
Derivatives not designated as hedging - Assets	38	22
Derivatives not designated as hedging - Liabilities	15	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	7	4
Derivatives not designated as hedging - Liabilities	68	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	6,059	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	$ 157	$ 124