Divestitures (Details) $ in Millions	3 Months Ended
Mar. 24, 2018 USD ($)
Divestitures [Abstract]
Gain (Loss) on Disposition of Business	$ 145
Gain (loss) on sale of subsidiary, net of tax	$ 125

Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.

No definition available.

Name:	us-gaap_GainLossOnSaleOfBusiness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration