Segment Information - Financial Information for Partnership's Reportable Segments (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2023	Sep. 30, 2022	Sep. 29, 2023	Sep. 30, 2022
Net revenue:
Total net revenue	$ 3,493	$ 3,050	$ 10,152	$ 9,097
Pre-variable income:
Total pre-variable income	861	733	2,558	2,343
Variable compensation:
Total variable compensation	467	414	1,353	1,308
Income before allocations to partners:
Income before allocations to partners	394	319	1,205	1,035
United States [Member]
Net revenue:
Total net revenue	3,394	2,955	9,863	8,820
Pre-variable income:
Total pre-variable income	840	709	2,496	2,283
Variable compensation:
Total variable compensation	457	405	1,322	1,275
Income before allocations to partners:
Income before allocations to partners	383	304	1,174	1,008
Canada [Member]
Net revenue:
Total net revenue	99	95	289	277
Pre-variable income:
Total pre-variable income	21	24	62	60
Variable compensation:
Total variable compensation	10	9	31	33
Income before allocations to partners:
Income before allocations to partners	$ 11	$ 15	$ 31	$ 27