Fair Value Measurements - Changes in balances of Level 3 financial liabilities carried at fair value (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liabilities, beginning balance	$ (2)	$ (25)	$ (23)
Total realized/unrealized gains (losses) included in Net earnings	(1)	23	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0	0
Purchases and issuances	(1)	0	(2)
Sales and settlements	2	0	0
Transfer into Level 3	0	0	0
Transfer out of Level 3	0	0	0
Financial liabilities, ending balance	$ (2)	(2)	(25)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Realized gains (losses) on securities
Contingent consideration - acquisitions
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liabilities, beginning balance	$ (2)	(25)	(23)
Total realized/unrealized gains (losses) included in Net earnings	(1)	23	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0	0
Purchases and issuances	(1)	0	(2)
Sales and settlements	2	0	0
Transfer into Level 3	0	0	0
Transfer out of Level 3	0	0	0
Financial liabilities, ending balance	$ (2)	$ (2)	$ (25)