Schedule I - Condensed Statements of Income (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 25, 2015	Jun. 26, 2015	Mar. 27, 2015	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
NET REVENUE
Other									$ 22	$ 32	$ 52
Total revenue									6,694	6,333	5,716
Interest expense									75	55	59
Net revenue	$ 1,658	$ 1,645	$ 1,681	$ 1,635	$ 1,641	$ 1,583	$ 1,564	$ 1,490	6,619	6,278	5,657
OPERATING EXPENSES
Compensation and benefits									4,641	4,436	3,960
Other operating expenses									265	236	218
Total operating expenses									5,781	5,508	4,983
Income before allocations to partners	$ 194	$ 208	$ 222	$ 214	$ 195	$ 195	$ 194	$ 186	838	770	674
Allocations to partners									(838)	(770)	(674)
Net income									0	0	0
Parent Company [Member]
NET REVENUE
Subsidiary earnings									833	764	667
Management fee income									99	78	76
Other									7	7	9
Total revenue									939	849	752
Interest expense									69	48	48
Net revenue									870	801	704
OPERATING EXPENSES
Compensation and benefits									30	30	28
Other operating expenses									2	1	2
Total operating expenses									32	31	30
Income before allocations to partners									838	770	674
Allocations to partners									(838)	(770)	(674)
Net income									$ 0	$ 0	$ 0