Available for Sale Debt Securities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 11,653	$ 9,912
Unrealized Gain	25	6
Unrealized Loss	577	834
Fair Value	11,101	9,084
Tax exempt bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	0	37
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	0	37
Taxable Bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	11,467	9,705
Unrealized Gain	23	6
Unrealized Loss	574	830
Fair Value	10,916	8,881
Restricted Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	186	170
Unrealized Gain	2	0
Unrealized Loss	3	4
Fair Value	$ 185	$ 166