Available for Sale Debt Securities Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Apr. 01, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 10,148	$ 9,912
Unrealized Gains	10	6
Unrealized Losses	707	834
Fair Value	9,451	9,084
Taxable bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,931	9,705
Unrealized Gains	10	6
Unrealized Losses	703	830
Fair Value	9,238	8,881
Tax exempt bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	30	37
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	30	37
Restricted investments [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	187	170
Unrealized Gains	0	0
Unrealized Losses	4	4
Fair Value	$ 183	$ 166