Consolidated Statements of Changes in Partnership Capital Subject to Mandatory Redemption (Unaudited) - USD ($) $ in Millions	Total	Limited Partnership Capital [Member]	Profits Interests [Member]	Subordinated Limited Partnership Capital [Member]	General Partnership Capital [Member]
TOTAL PARTNERSHIP CAPITAL AND PROFITS INTERESTS SUBJECT TO MANDATORY REDEMPTION at Dec. 31, 2022	$ 3,819	$ 1,312		$ 671	$ 1,836
Reserve for anticipated withdrawals at Dec. 31, 2022	(464)	(100)		(53)	(311)
Partnership capital subject to mandatory redemption, net of reserve for anticipated withdrawals at Dec. 31, 2022	3,355	1,212		618	1,525
Partnership loans outstanding at Dec. 31, 2022	335	0		0	335
Total partnership capital, including capital financed with partnership loans, net of reserve for anticipated withdrawals at Dec. 31, 2022	3,690	1,212		618	1,860
Issuance of partnership interests	945	568		65	312
Redemption of partnership interests	(92)	(7)		(14)	(71)
Net income allocated to partners	401	68		45	288
Other comprehensive loss allocations	0
Distributions	(22)	(2)		0	(20)
Total partnership capital, including capital financed with partnership loans, and profits interests at Mar. 31, 2023	4,922	1,839		714	2,369
Partnership loans outstanding at Mar. 31, 2023	(523)	0		0	(523)
TOTAL PARTNERSHIP CAPITAL AND PROFITS INTERESTS SUBJECT TO MANDATORY REDEMPTION at Mar. 31, 2023	4,399	1,839		714	1,846
Reserve for anticipated withdrawals at Mar. 31, 2023	(340)	(66)		(45)	(229)
Partnership capital subject to mandatory redemption, net of reserve for anticipated withdrawals at Mar. 31, 2023	4,059	1,773		669	1,617
TOTAL PARTNERSHIP CAPITAL AND PROFITS INTERESTS SUBJECT TO MANDATORY REDEMPTION at Dec. 31, 2023	4,627	1,920	$ 0	726	1,981
Reserve for anticipated withdrawals at Dec. 31, 2023	(578)	(170)	0	(60)	(348)
Partnership capital subject to mandatory redemption, net of reserve for anticipated withdrawals at Dec. 31, 2023	4,049	1,750	0	666	1,633
Partnership loans outstanding at Dec. 31, 2023	439	0	0	0	439
Total partnership capital, including capital financed with partnership loans, net of reserve for anticipated withdrawals at Dec. 31, 2023	4,488	1,750	0	666	2,072
Issuance of partnership interests	337	6	0	64	267
Redemption of partnership interests	(64)	(7)	0	(11)	(46)
Net income allocations	467	74	10	52	331
Other comprehensive loss allocations	(3)	(1)	0	0	(2)
Distributions	(21)	4	0	0	(25)
Total partnership capital, including capital financed with partnership loans, and profits interests at Mar. 29, 2024	5,204	1,826	10	771	2,597
Partnership loans outstanding at Mar. 29, 2024	(594)	0	0	0	(594)
TOTAL PARTNERSHIP CAPITAL AND PROFITS INTERESTS SUBJECT TO MANDATORY REDEMPTION at Mar. 29, 2024	4,610	1,826	10	771	2,003
Reserve for anticipated withdrawals at Mar. 29, 2024	(398)	(77)	(10)	(52)	(259)
Reserve for anticipated withdrawals at Mar. 29, 2024	(398)
Partnership capital subject to mandatory redemption, net of reserve for anticipated withdrawals at Mar. 29, 2024	$ 4,212	$ 1,749	$ 0	$ 719	$ 1,744