Stock-Based Compensation - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2026 USD ($)	Sep. 30, 2026 USD ($)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Pre-tax stock-based compensation cost increase (decrease)	$ 91	$ 253
Unrecognized compensation cost related to non-vested awards	2,500	$ 2,500
Unrecognized compensation cost related to non-vested awards, weighted average period of recognition		2 years 6 months
Restricted Stock Units (RSUs)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Pre-tax stock-based compensation cost increase (decrease)	80	$ 210
Performance Shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Pre-tax stock-based compensation cost increase (decrease)	$ 12	$ 37