FINANCIAL INSTRUMENTS - Schedule of Cash, Cash Equivalents, Investments and Restricted Cash and Investments Unrealized Loss Positions (Detail) $ in Thousands	Dec. 25, 2016 USD ($)
Fair Value
Unrealized Losses Less Than 12 Months	$ 2,578,407
Unrealized Losses 12 Months or Greater	54,192
Total	2,632,599
Gross Unrealized Loss
Unrealized Losses Less Than 12 Months	(13,509)
Unrealized Losses 12 Months or Greater	(298)
Total	(13,807)
Municipal Notes and Bonds
Fair Value
Unrealized Losses Less Than 12 Months	99,754
Unrealized Losses 12 Months or Greater	1,996
Total	101,750
Gross Unrealized Loss
Unrealized Losses Less Than 12 Months	(111)
Unrealized Losses 12 Months or Greater	(4)
Total	(115)
U.S. Treasury & Agencies
Fair Value
Unrealized Losses Less Than 12 Months	684,419
Unrealized Losses 12 Months or Greater	0
Total	684,419
Gross Unrealized Loss
Unrealized Losses Less Than 12 Months	(4,720)
Unrealized Losses 12 Months or Greater	0
Total	(4,720)
Government-Sponsored Enterprises
Fair Value
Unrealized Losses Less Than 12 Months	30,627
Unrealized Losses 12 Months or Greater	564
Total	31,191
Gross Unrealized Loss
Unrealized Losses Less Than 12 Months	(26)
Unrealized Losses 12 Months or Greater	(16)
Total	(42)
Foreign Government Bonds
Fair Value
Unrealized Losses Less Than 12 Months	26,189
Unrealized Losses 12 Months or Greater	0
Total	26,189
Gross Unrealized Loss
Unrealized Losses Less Than 12 Months	(177)
Unrealized Losses 12 Months or Greater	0
Total	(177)
Corporate Notes and Bonds
Fair Value
Unrealized Losses Less Than 12 Months	1,617,323
Unrealized Losses 12 Months or Greater	34,456
Total	1,651,779
Gross Unrealized Loss
Unrealized Losses Less Than 12 Months	(7,476)
Unrealized Losses 12 Months or Greater	(87)
Total	(7,563)
Mortgage Backed Securities — Residential
Fair Value
Unrealized Losses Less Than 12 Months	75,601
Unrealized Losses 12 Months or Greater	10,038
Total	85,639
Gross Unrealized Loss
Unrealized Losses Less Than 12 Months	(818)
Unrealized Losses 12 Months or Greater	(157)
Total	(975)
Mortgage Backed Securities — Commercial
Fair Value
Unrealized Losses Less Than 12 Months	44,494
Unrealized Losses 12 Months or Greater	7,138
Total	51,632
Gross Unrealized Loss
Unrealized Losses Less Than 12 Months	(181)
Unrealized Losses 12 Months or Greater	(34)
Total	$ (215)