Debt Debt - Secured Notes (Detail) - USD ($) $ in Millions	Apr. 03, 2021	Jan. 02, 2021
Debt Instrument [Line Items]
Total debt	$ 5,738	$ 5,748
Senior notes \| Senior Secured Notes due 2025
Debt Instrument [Line Items]
Total debt	988	987
Unamortized deferred financing costs	$ 12	$ 13

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_UnamortizedDebtIssuanceExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant