Financial Instruments and Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
Jun. 29, 2018	Jun. 30, 2017	Mar. 30, 2018
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Non-marketable equity investments	$ 175		$ 175
Equity method investment	108		134
Loss from equity interest	26	$ 0
Level 2
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair value of debt	3,900		$ 3,900
Other Income
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Loss from equity interest	$ 26

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
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No definition available.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Cost of the investment.

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