Fair Value Measurements - Schedule of Effect of Net Investment Hedges (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Apr. 01, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized In Accumulated OCI	$ 71	$ (150)
Sale of Subsidiary Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified From Accumulated OCI Into Income	0	0
Other Income Expense Net
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified From Accumulated OCI Into Income	0	0
Cross Currency Interest Rate Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized In Accumulated OCI	$ 370	$ 0

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Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CCC
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998896-113959

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Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CCC
-Subparagraph (b)
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