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Schedule I—Condensed Financial Information of Registrant (Parent Company Only) - Cash Flows (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Cash Flows from Operating Activities      
Net cash provided by (used in) operating activities $ 6,322 $ 3,789 $ 1,064
Cash Flows from Investing Activities      
Net cash used in investing activities (42,407) (23,444) (1,552)
Cash Flows from Financing Activities      
Preferred stock dividends (22) 0 (37)
Common stock dividends (1,012) (962) (517)
Issuance of debt 4,912 5,745 1,334
Repurchase of common stock (561) (635) (299)
Net cash provided by financing activities 42,638 28,710 109
Net Increase (Decrease) in Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, and Cash and Cash Equivalents Held at Consolidated Variable Interest Entities 6,563 9,040 (379)
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, and Cash and Cash Equivalents Held at Consolidated Variable Interest Entities, Beginning of Period 11,128 2,088 2,467
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, and Cash and Cash Equivalents Held at Consolidated Variable Interest Entities, End of Period 17,691 11,128 2,088
Supplemental Disclosure of Cash Flow Information      
Cash paid for taxes 358 1,007 121
Cash paid for interest 720 566 556
Parent Company      
Cash Flows from Operating Activities      
Net cash provided by (used in) operating activities (63) 36 (95)
Cash Flows from Investing Activities      
Contributions to subsidiaries (1,250) 0 0
Distributions from subsidiaries 1,166 2,016 923
Due from subsidiaries, net 147 (579) 0
Net cash used in investing activities 63 1,437 923
Cash Flows from Financing Activities      
Preferred stock dividends (22) 0 (37)
Common stock dividends (1,012) (916) (501)
Issuance of debt 1,100 0 0
Payment of debt issuance cost (25) 0 0
Issuance of Mandatory Convertible Preferred stock, net of issuance costs 1,398 0 0
Payment of debt issuance cost 25 0 0
Repurchase of common stock (561) (635) (299)
Due to subsidiaries, net 109 78 9
Net cash provided by financing activities 987 (1,473) (828)
Net Increase (Decrease) in Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, and Cash and Cash Equivalents Held at Consolidated Variable Interest Entities 987 0 0
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, and Cash and Cash Equivalents Held at Consolidated Variable Interest Entities, Beginning of Period 0 0 0
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, and Cash and Cash Equivalents Held at Consolidated Variable Interest Entities, End of Period 987 0 0
Supplemental Disclosure of Cash Flow Information      
Cash paid for taxes 37 55 118
Cash paid for interest $ 14 $ 0 $ 0