Segment Information - Financial Information for Partnership's Reportable Segments (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Net revenue:
Total net revenue	$ 4,123	$ 3,493	$ 11,820	$ 10,152
Pre-variable income:
Total pre-variable income	1,197	861	3,275	2,558
Variable compensation:
Total variable compensation	638	467	1,779	1,353
Income before allocations to partners:
Income before allocations to partners	559	394	1,496	1,205
United States [Member]
Net revenue:
Total net revenue	4,014	3,394	11,495	9,863
Pre-variable income:
Total pre-variable income	1,173	840	3,204	2,496
Variable compensation:
Total variable compensation	625	457	1,742	1,322
Income before allocations to partners:
Income before allocations to partners	548	383	1,462	1,174
Canada [Member]
Net revenue:
Total net revenue	109	99	325	289
Pre-variable income:
Total pre-variable income	24	21	71	62
Variable compensation:
Total variable compensation	13	10	37	31
Income before allocations to partners:
Income before allocations to partners	$ 11	$ 11	$ 34	$ 31