SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF PARENT - STATEMENT OF COMPREHENSIVE INCOME (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Statement of Income Captions [Line Items]
Net income, pretax amount, attributable to parent	$ 3,081	$ 3,565	$ 2,695
Income tax (expense) benefit	(219)	(490)	(556)
Total, net of income tax and after NCI	2,862	3,075	2,139
Foreign currency translation adjustments, pretax amount, attributable to parent	(30)	23	11
Foreign currency translation adjustments, income tax (expense) benefit, attributable to parent	0	0	0
Foreign currency translation adjustments, net of tax amount, attributable to parent	(30)	23	11
Financial instruments, pretax amount, attributable to parent	14	57	221
Financial instruments, income tax (expense) benefit, attributable to parent	(2)	(18)	(55)
Financial instruments, net of tax amount, attributable to parent	12	39	166
Pension and other postretirement benefits, pretax amount, attributable to parent	18	(39)	3
Pension and other postretirement benefits, income tax (expense) benefit, attributable to parent	(16)	8	(6)
Pension and other postretirement benefits, net of tax amount, attributable to parent	2	(31)	(3)
Total other comprehensive income, pretax amount, attributable to parent	2	41	235
Total other comprehensive income, income tax (expense) benefit, attributable to parent	(18)	(10)	(61)
Total other comprehensive income, net of tax amount, attributable to parent	(16)	31	174
Comprehensive income, after preferred dividends of subsidiary, pretax amount, attributable to parent	3,082	3,605	2,929
Comprehensive income, after preferred dividends of subsidiary, income tax (expense) benefit, attributable to parent	(237)	(500)	(617)
Comprehensive income, after preferred dividends of subsidiary	2,845	3,105	2,312
Parent Company
Condensed Statement of Income Captions [Line Items]
Net income, pretax amount, attributable to parent	2,696	2,940	2,027
Income tax (expense) benefit	165	134	111
Total, net of income tax and after NCI	2,861	3,074	2,138
Foreign currency translation adjustments, pretax amount, attributable to parent	(30)	23	11
Foreign currency translation adjustments, income tax (expense) benefit, attributable to parent	0	0	0
Foreign currency translation adjustments, net of tax amount, attributable to parent	(30)	23	11
Financial instruments, pretax amount, attributable to parent	14	57	221
Financial instruments, income tax (expense) benefit, attributable to parent	(2)	(18)	(55)
Financial instruments, net of tax amount, attributable to parent	12	39	166
Pension and other postretirement benefits, pretax amount, attributable to parent	18	(39)	3
Pension and other postretirement benefits, income tax (expense) benefit, attributable to parent	(16)	8	(6)
Pension and other postretirement benefits, net of tax amount, attributable to parent	2	(31)	(3)
Total other comprehensive income, pretax amount, attributable to parent	2	41	235
Total other comprehensive income, income tax (expense) benefit, attributable to parent	(18)	(10)	(61)
Total other comprehensive income, net of tax amount, attributable to parent	(16)	31	174
Comprehensive income, after preferred dividends of subsidiary, pretax amount, attributable to parent	2,698	2,981	2,262
Comprehensive income, after preferred dividends of subsidiary, income tax (expense) benefit, attributable to parent	147	124	50
Comprehensive income, after preferred dividends of subsidiary	$ 2,845	$ 3,105	$ 2,312