Consolidated Statements of Shareholder's Equity (Parenthetical) - USD ($) $ in Millions		12 Months Ended
	Jan. 01, 2020	Dec. 31, 2019
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201613Member
Cumulative Effect, Period of Adoption, Adjustment
Impact of new accounting guidance	$ 140
Impact of new accounting guidance, tax	$ 21