| **Debt**                       | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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| **Debt Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Debt                           | DEBTThe carrying value of the Company’s debt, including discounts, the fair value of an interest rate swap agreement and the remaining deferred gain from a terminated interest rate swap agreement, consisted of the following (in millions): April 4, 2015 January 3, 2015Term loan due June 2015$— $500Term loan due August 2015— 2502.50% senior notes due 2016504 5063.25% senior notes due 2023897 8964.75% senior notes due 2043696 6961.58% Yen-denominated senior notes due 201768 682.04% Yen-denominated senior notes due 2020106 107Yen-denominated credit facilities54 54Commercial paper borrowings1,179 789Total debt3,504 3,866Less: current debt obligations1,737 1,593Long-term debt$1,767 $2,273Contractual maturities of the Company's debt for the next five fiscal years and thereafter, excluding discounts, the fair value of an interest rate swap agreement and the remaining deferred gain from a terminated interest rate swap agreement, as of April 4, 2015 are as follows (in million): Remainder of 20152016201720182019After 2019Expected future minimum principal payments$1,206$527$68$—$—$1,707During the first quarter of 2015, the Company repaid its 2-year, $500 million unsecured term loan due June 2015 and its 364-day, $250 million unsecured term loan due August 2015. The Company also increased its commercial paper balance to support the Company’s common stock repurchases during the first quarter of 2015. Refer to Note 7 for further information on the Company's common stock repurchase.The yen-denominated credit facility that expired in March 2015 for 3.25 billion Japanese Yen (the equivalent of $27 million as of April 4, 2015) was automatically extended for a one-year period bearing interest at Yen LIBOR plus 0.25%.On May 1, 2015, the Company entered into a 364-day, $175 million unsecured term loan that matures in April 2016, the proceeds of which were used to acquire the remaining ownership interest in Spinal Modulation. These borrowings bear interest at LIBOR plus 0.9% and the Company may repay the term loan at any time. |

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| - Definition
The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
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