Debt Standby Letters of Credit (Details) - Standby Letters of Credit $ in Millions	Dec. 28, 2019 USD ($)
Financial Support for Nonconsolidated Legal Entity [Line Items]
Letters of Credit outstanding amount	$ 87
Secured
Financial Support for Nonconsolidated Legal Entity [Line Items]
Letters of Credit outstanding amount	52
Unsecured
Financial Support for Nonconsolidated Legal Entity [Line Items]
Letters of Credit outstanding amount	$ 35