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Fair Value (Details) - USD ($) $ in Millions | Jul. 01, 2018 | Dec. 31, 2017
--- | --- | ---
Fair Value |  |
Financial assets (liabilities) |  |
Cash and equivalents | $ 8 | $ 20
Available-for-sale debt securities | 127 |
Available-for-sale debt securities |  | 117
Equity securities | 52 |
Equity securities |  | 54
Other investments | 4 |
Other investments |  | 4
Cash flow hedges | (151) | (105)
Short- and long-term debt principal | (14,194) | (3,974)
Carrying Value |  |
Financial assets (liabilities) |  |
Cash and equivalents | 8 | 20
Available-for-sale debt securities | 127 |
Available-for-sale debt securities |  | 117
Equity securities | 52 |
Equity securities |  | 54
Other investments | 4 |
Other investments |  | 4
Cash flow hedges | (151) | (105)
Short- and long-term debt principal | (14,400) | (4,032)
Fair Value, Inputs, Level 1 |  |
Financial assets (liabilities) |  |
Cash and equivalents | 2 | 15
Available-for-sale debt securities | 0 |
Available-for-sale debt securities |  | 0
Equity securities | 52 |
Equity securities |  | 54
Other investments | 0 |
Other investments |  | 0
Cash flow hedges | 0 | 0
Short- and long-term debt principal | 0 | 0
Fair Value, Inputs, Level 2 |  |
Financial assets (liabilities) |  |
Cash and equivalents | 6 | 5
Available-for-sale debt securities | 127 |
Available-for-sale debt securities |  | 117
Equity securities | 0 |
Equity securities |  | 0
Other investments | 0 |
Other investments |  | 0
Cash flow hedges | (151) | (105)
Short- and long-term debt principal | (14,194) | (3,974)
Fair Value, Inputs, Level 3 |  |
Financial assets (liabilities) |  |
Cash and equivalents | 0 | 0
Available-for-sale debt securities | 0 |
Available-for-sale debt securities |  | 0
Equity securities | 0 |
Equity securities |  | 0
Other investments | 4 |
Other investments |  | 4
Cash flow hedges | 0 | 0
Short- and long-term debt principal | $ 0 | $ 0

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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