Income Taxes - Net Operating Loss Carryforwards Expire (Details) $ in Millions	Dec. 29, 2018 USD ($)
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	$ 73
2019-2023
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	33
2024-2028
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	26
2029-2033
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	9
2034-2038
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	$ 5