Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Member’s Equity	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2023	$ 49,263	$ 49,029	$ 234
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions	(500)	(500)
Comprehensive income (loss), net of tax	1,140	1,143	(3)
Ending Balance at Mar. 31, 2024	49,903	49,672	231
Beginning Balance at Dec. 31, 2023	49,263	49,029	234
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions	(2,800)
Comprehensive income (loss), net of tax	3,742
Ending Balance at Sep. 30, 2024	50,205	49,982	223
Beginning Balance at Mar. 31, 2024	49,903	49,672	231
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions	(1,600)	(1,600)	0
Comprehensive income (loss), net of tax	1,223	1,227	(4)
Ending Balance at Jun. 30, 2024	49,526	49,299	227
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions	(700)	(700)	0
Comprehensive income (loss), net of tax	1,379	1,383	(4)
Ending Balance at Sep. 30, 2024	50,205	49,982	223
Beginning Balance at Dec. 31, 2024	50,641	50,060	581
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions	(700)	(700)	0
Comprehensive income (loss), net of tax	1,209	1,214	(5)
Ending Balance at Mar. 31, 2025	51,150	50,574	576
Beginning Balance at Dec. 31, 2024	50,641	50,060	581
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions	(3,200)
Comprehensive income (loss), net of tax	4,113
Ending Balance at Sep. 30, 2025	51,554	50,989	565
Beginning Balance at Mar. 31, 2025	51,150	50,574	576
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions	(1,500)	(1,500)	0
Comprehensive income (loss), net of tax	1,460	1,466	(6)
Ending Balance at Jun. 30, 2025	51,110	50,540	570
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions	(1,000)	(1,000)	0
Comprehensive income (loss), net of tax	1,444	1,449	(5)
Ending Balance at Sep. 30, 2025	$ 51,554	$ 50,989	$ 565