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)	0
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, 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