Pension - Summary of Fair Value of Pension Plan Assets by Asset Category (Detail) $ in Millions	Jan. 03, 2022 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 2,615
Global Equity Funds at Net Asset Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	238
Global Equity Funds at Net Asset Value [Member] | Not Subject to Leveling [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	238
Governments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	1,677
Governments [Member] | Significant Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	1,608
Governments [Member] | Not Subject to Leveling [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	69
Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	638
Corporate Bonds [Member] | Significant Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	638
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	106
Fixed Income Securities [Member] | Not Subject to Leveling [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	106
Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	11
Real Estate [Member] | Not Subject to Leveling [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	11
Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	(153)
Other [Member] | Significant Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	(212)
Other [Member] | Not Subject to Leveling [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	59
Cash & Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	98
Cash & Cash Equivalents [Member] | Significant Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	33
Cash & Cash Equivalents [Member] | Not Subject to Leveling [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	65
Public Equities and Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	2,615
Public Equities and Fixed Income Securities [Member] | Significant Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	2,067
Public Equities and Fixed Income Securities [Member] | Not Subject to Leveling [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets Before adjustment	$ 548