Income Tax - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended				12 Months Ended
	Jan. 01, 2018	Dec. 31, 2018	Dec. 30, 2018	Dec. 31, 2017	Dec. 30, 2017	Sep. 30, 2018
Income Taxes [Line Items]
Net discrete tax (benefits) charges related to tax settlements		$ (24)		$ 188
Net tax expense from impact of the Act		$ (17)		$ 185
Income tax rate	21.00%			35.00%		24.53%
Percentage of dividend received deduction for foreign dividends		100.00%
Income tax rate for aggregate cash position				15.50%
Income tax rate for exceeds aggregate cash position				8.00%
(Provision) benefit for income taxes for deemed repatriation		$ 17				$ (138)
Provisional tax expense		$ 121
Percentage of deduction for dividends from specified foreign corporations		100.00%
Provisional amount to tax expense			$ 8
Percentage of tax on foreign income in excess of a deemed return on tangible assets of foreign corporations		10.50%
Uncertain tax positions from expirations of statute of limitations			$ 7		$ 1
Earliest Tax Year [Member] | United States Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2014
Latest Tax Year [Member] | United States Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2017
State Tax Authorities [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2005
State Tax Authorities [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2017
Non-U.S. Jurisdictions [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2002
Non-U.S. Jurisdictions [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Tax years remain subject to examination		2017