Business Disposition (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
	Jul. 02, 2018	Sep. 29, 2018	Sep. 29, 2018
Business Disposition
Net proceeds from business disposition			$ 807
Disposition of businesses | Tools and Test Equipment
Business Disposition
Net proceeds from business disposition	$ 807
After tax gain		$ 410
Assets
Accounts receivable, net	71
Inventories	100
Property, plant and equipment, net	59
Goodwill	153
Other assets	24
Total Assets	407
Liabilities
Accounts payable	30
Other current liabilities	25
Other liabilities	11
Total Liabilities	$ 66