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EQUITY AND STOCK-BASED COMPENSATION (Details 2) (USD $) In Millions, unless otherwise specified | 0 Months Ended | 3 Months Ended | 0 Months Ended
--- | --- | --- | ---
Jan. 02, 2014 | Apr. 01, 2013 | Jan. 02, 2013 | Mar. 29, 2014 | Mar. 29, 2014 Minimum | Mar. 29, 2014 Maximum | Mar. 29, 2014 Restricted stock shares and restricted stock units | Mar. 30, 2013 Restricted stock shares and restricted stock units | Jan. 02, 2014 S&P Composite 1500 Industrials Index | Apr. 01, 2013 S&P Composite 1500 Industrials Index | Jan. 02, 2013 S&P Composite 1500 Industrials Index
Stock-based Compensation |  |  |  |  |  |  |  |  |  |  |
Compensation expense |  |  |  |  |  |  | $ 24.7 | $ 20.3 |  |  |
Related tax benefit |  |  |  |  |  |  | $ 8.9 | $ 7.3 |  |  |
Assumptions in determining the fair value of awards granted |  |  |  |  |  |  |  |  |  |  |
Annual expected stock price volatility (as a percent) | 33.70% | 35.50% | 36.30% |  |  |  |  |  | 19.90% | 21.20% | 22.40%
Annual expected dividend yield (as a percent) | 1.02% | 1.29% | 1.42% |  |  |  |  |  |  |  |
Risk-free interest rate (as a percent) | 0.76% | 0.33% | 0.37% |  |  |  |  |  | 0.76% | 0.33% | 0.37%
Correlation between total shareholder return for SPX and the applicable S&P Index | 0.7631 | 0.7668 | 0.7778 |  |  |  |  |  |  |  |
Historical period upon which annual expected stock price volatility is based |  |  |  | 3 years |  |  |  |  |  |  |
Daily treasury yield curve period upon which average risk-free interest rate is based |  |  |  |  | 1 year | 3 years |  |  |  |  |

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- Definition The historical period upon which annual expected stock price volatility is based. + References No definition available. + Details
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- Definition Represents the daily treasury yield curve period, in years, upon which the average risk-free interest rate is based. + References No definition available. + Details
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- Definition Represents the assumed correlation between the total shareholder return for the entities stock and the S&P 500 Composite Index and the S&P Composite 1500 Industrials Index. + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: 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=6415400&loc=d3e5047-113901 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + 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)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + 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)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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