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Employee Stock Benefit Plans (Tables) | 12 Months Ended
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Dec. 29, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Stock-Based Compensation Expense, Net Of Tax, Related To Employee Stock-Based Compensation (For All Plans) | The following table summarizes the components of stock-based compensation expense recognized in the Company’s Consolidated Statements of Income for the periods indicated:
Fiscal Years | 2017 |  | 2016 |  | 2015
(In millions) |  |  |  |  |
Restricted stock units | $ | 53.3 |  |  | $ | 35.9 |  |  | $ | 27.9 |
Stock options | 5.7 |  |  | 10.9 |  |  | 16.6 |
ESPP | 5.8 |  |  | 5.8 |  |  | 5.6 |
Total stock-based compensation expense | $ | 64.8 |  |  | $ | 52.6 |  |  | $ | 50.1 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
| Restricted Stock Units Outstanding
| Restricted Stock Units |  | Weighted Average Grant-Date Fair Value
(In millions, except for per share data) |  |  |
Outstanding at the beginning of year | 4.7 |  |  | $ | 26.40 |
Granted (1) | 2.0 |  |  | $ | 40.19 |
Shares released, net | (1.4 | ) |  | $ | 28.06 |
Cancelled and Forfeited | (0.2 | ) |  | $ | 30.58 |
Outstanding at the end of year | 5.1 |  |  | $ | 31.71 |
(1) During fiscal year 2017, the Company granted approximately 1.3 million time-based RSUs, 0.5 million performance-based RSUs and 0.2 million market-based RSUs. As of fiscal year end 2017, the Company has 1.7 million market-based and performance-based RSUs outstanding and none had vested as of fiscal 2017 year end.
Schedule Of Restricted Stock Unit Activity | The following table summarizes information about restricted stock units outstanding as of fiscal 2017:
| Number Of Shares Underlying Restricted Stock Units (in millions) |  | Weighted- Average Remaining Vesting Period (in years) |  | Aggregate Fair Value (in millions)
Expected to vest (1) | 4.7 |  |  | 1.40 |  | $ | 192.9 |
(1) For those shares expected to vest upon the achievement of specified performance goals, the amount represents of estimated number of shares that expect to vest based on the estimated achievement of such specified performance goals as of the end of fiscal 2017.
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions | The fair value of the share purchase rights granted under the Purchase Plan are valued using the Black-Scholes option pricing model with the following weighted-average assumptions:
Fiscal Years | 2017 |  | 2016 |  | 2015
Expected life of purchase | 0.5 years |  |  | 0.5 years |  |  | 0.5 years |
Expected stock price volatility (1) | 32.1 | % |  | 36.9 | % |  | 31.3 | %
Risk free interest rate | 0.70 | % |  | 0.41 | % |  | 0.08 | %
Expected dividend yield | — |  |  | — |  |  | — |
Share-based Compensation, Stock Options, Activity [Table Text Block] | The following table summarizes information about stock options outstanding as of fiscal 2017 year end:
| Number Of Shares (in millions) |  | Weighted- Average Exercise Price per Share |  | Weighted- Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value (in millions)
Outstanding at the beginning of year | 7.6 |  |  | $ | 24.60 |  |  |  |  |
Option exercised | (3.2 | ) |  | 22.52 |  |  |  |  |
Cancelled and Forfeited | — |  |  | 25.97 |  |  |  |  |
Outstanding at the end of year | 4.4 |  |  | 26.12 |  |  | 2.17 |  | $ | 63.8 |
Options exercisable | 4.1 |  |  | $ | 26.07 |  |  | 2.04 |  | $ | 60.1 |
Market Based Restricted Stock Units [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Weighted-Average Assumptions Used In Stock Options Granted | The fair value of RSUs with market-based vesting conditions is measured on the grant date using a Monte Carlo simulation with the following weighted-average assumptions:
Fiscal Years | 2017 | 2016 | 2015
Expected life of Market-Based Restricted Stock Units | 3.0 years |  | 3.1 years |  | 2.6 years |
Expected stock price volatility | 31.46 | % | 33.8 | % | 30.9 | %
Risk free interest rate | 1.46 | % | 0.9 | % | 0.9 | %
Expected dividend yield | — |  | — |  | — |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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