Hedging Transactions and Derivative Financial Instruments (Summary of Notional Values and Pretax Impact in Fair Values) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Reclassified from OCI	$ (350)	$ 96	$ (112)
Net investment hedging | Foreign currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, original notional amount	3,875	3,875
Derivative, notional amount outstanding	2,500	3,000
Gain (loss) recognized in OCI on derivatives and nonderivatives	(213)	128
Amounts Reclassified from OCI	0	0
Net investment hedging | Foreign currency denominated debt
Derivative Instruments, Gain (Loss) [Line Items]
Nonderivative hedging instruments	6,054	3,042
Net investment hedges, gain (loss), recognized in OCI	(414)	249
Amounts Reclassified from OCI	0	0
Cash flow hedging | Foreign currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, original notional amount	4,000	4,000
Derivative, notional amount outstanding	2,600	2,600
Gain (loss) recognized in OCI on derivatives and nonderivatives	(110)	(4)
Amounts Reclassified from OCI	339	(111)
Cash flow hedging | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, original notional amount	1,600	1,600
Derivative, notional amount outstanding	0	0
Gain (loss) recognized in OCI on derivatives and nonderivatives	0	0
Amounts Reclassified from OCI	3	3
Cash flow and net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Original Notional Amount	15,529	12,517
Notional Amount Outstanding	11,154	8,642
Gain (loss) recognized in OCI on derivatives and nonderivatives	(737)	373
Amounts Reclassified from OCI	$ 342	$ (108)