Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Effective income tax rates	18.00%	(10.00%)	(60.00%)
Variation of effective tax rate from federal statutory tax rate	21.00%	35.00%	35.00%
Decrease to deferred tax liabilities	$ 7	$ 173
Decrease to current taxes payable	1
Adjustment to deferred income tax benefit	8	173
Increase to deferred tax liabilities		4
Defined benefit plans, incremental contributions by employer	35
Adjustment to other long-term liabilities		4
Deferred tax assets, related to federal and state net operating losses	73	86
Operating loss carryforward - state	73
Decrease in unrecognized tax benefits reasonably possible	1
Unrecognized tax benefits that would impact tax rate if recognized	36	$ 60	$ 43
Other Tax Benefits
Income Taxes [Line Items]
Accrued interest and penalties related to unrecognized tax benefits	5		$ 5
State
Income Taxes [Line Items]
Minimum tax credit carryforwards	$ 16