Description of Business and Summary of Significant Accounting Policies Accounting Guidance Not Yet Adopted (Details) $ in Millions	12 Months Ended
	Dec. 30, 2018 USD ($)
Minimum [Member] | Assets [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 520
Minimum [Member] | Liability [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	550
Maximum [Member] | Assets [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	620
Maximum [Member] | Liability [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 650