Income Taxes	9 Months Ended
Jun. 28, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes In the third quarter and first nine months of 2014, our effective tax rate was 27% on pre-tax income of $52.1 million and 21% on pre-tax income of $153.7 million, respectively, compared to a provision of 26% on pre-tax income of $46.4 million and a benefit of 12% on pre-tax income of $77.8 million in the third quarter and first nine months of 2013, respectively. In the third quarter and first nine months of 2014, our effective tax rate was lower than the 35% statutory federal income tax rate due to our corporate structure in which our foreign taxes are at a net effective tax rate lower than the U.S. rate and the reversal of a portion of our valuation allowance against net deferred tax assets described below. In the third quarter and first nine months of 2013, our effective tax rate was lower than the 35% statutory federal income tax rate due to our corporate structure in which our foreign taxes are at a net effective tax rate lower than the U.S. rate, and for the first nine months of 2013 due primarily to the reversal of a portion of our valuation allowance against net deferred tax assets described below. Our tax provision for the third quarter and our tax benefit for the first nine months of 2013 did not include a tax benefit on our forecast 2013 U.S. loss as it was offset by a valuation allowance established in the fourth quarter of 2012. A discrete benefit of $1.6 million was recorded in the third quarter of 2013 as a result of the conclusion of tax audits in several jurisdictions. Additionally, in the first nine months of 2013, we recorded a $2.0 million tax benefit related to research and development (R&D) tax credits in the U.S triggered by a retroactive extension of the R&D credit and a $3.2 million tax benefit related to final resolution of a long standing tax litigation and completion of a tax audit. In the fourth quarter of 2012, we recorded a $124.5 million non-cash charge to the income tax provision to establish a valuation allowance against all of our U.S. deferred tax assets. In the second quarter of 2014 and first quarter of 2013, our acquisitions of ThingWorx and Servigistics, Inc. were accounted for as business combinations. Assets acquired, including the fair values of acquired tangible assets, intangible assets (including finite-lived acquired intangible assets totaling $32.1 million for ThingWorx and $118.3 million for Servigistics) and assumed liabilities were recorded, and we recorded net deferred tax liabilities of $8.9 million and $35.6 million, respectively, primarily related to the tax effect of the acquired intangible assets that are not deductible for income tax purposes. These net deferred tax liabilities reduced our net deferred tax asset balance and resulted in a tax benefit of $8.9 million related to ThingWorx recorded in the second quarter of 2014 and $32.6 million related to Servigistics recorded in the first quarter of 2013 to decrease our valuation allowance in jurisdictions where we have recorded a valuation allowance (primarily the U.S.). As these decreases in the valuation allowance were not part of the accounting for the business combinations (the fair value of the assets acquired and liabilities assumed), they were recorded as income tax benefits. As of June 28, 2014 and September 30, 2013, we had unrecognized tax benefits of $14.9 million and $13.7 million, respectively. If all of our unrecognized tax benefits as of June 28, 2014 were to become recognizable in the future, we would record a benefit to the income tax provision of $13.7 million which would be partially offset by an increase in the U.S. valuation allowance of $6.9 million. Although we believe our tax estimates are appropriate, the final determination of tax audits and any related litigation could result in favorable or unfavorable changes in our estimates. We believe it is reasonably possible that within the next 12 months the amount of unrecognized tax benefits related to the resolution of multi-jurisdictional tax positions could be reduced by up to $2 million as audits close and statutes of limitations expire. We follow the with-and-without approach for the direct effects of windfall tax deductions to determine the timing of the recognition of benefits for windfall tax deductions. In the third quarter and first nine months of 2014, we recorded windfall tax benefits of $1.5 million and $9.6 million to additional paid-in capital.

Income Taxes

In the third quarter and first nine months of 2014, our effective tax rate was 27% on pre-tax income of $52.1 million and 21% on pre-tax income of $153.7 million, respectively, compared to a provision of 26% on pre-tax income of $46.4 million and a benefit of 12% on pre-tax income of $77.8 million in the third quarter and first nine months of 2013, respectively. In the third quarter and first nine months of 2014, our effective tax rate was lower than the 35% statutory federal income tax rate due to our corporate structure in which our foreign taxes are at a net effective tax rate lower than the U.S. rate and the reversal of a portion of our valuation allowance against net deferred tax assets described below.

In the third quarter and first nine months of 2013, our effective tax rate was lower than the 35% statutory federal income tax rate due to our corporate structure in which our foreign taxes are at a net effective tax rate lower than the U.S. rate, and for the first nine months of 2013 due primarily to the reversal of a portion of our valuation allowance against net deferred tax assets described below. Our tax provision for the third quarter and our tax benefit for the first nine months of 2013 did not include a tax benefit on our forecast 2013 U.S. loss as it was offset by a valuation allowance established in the fourth quarter of 2012. A discrete benefit of $1.6 million was recorded in the third quarter of 2013 as a result of the conclusion of tax audits in several jurisdictions. Additionally, in the first nine months of 2013, we recorded a $2.0 million tax benefit related to research and development (R&D) tax credits in the U.S triggered by a retroactive extension of the R&D credit and a $3.2 million tax benefit related to final resolution of a long standing tax litigation and completion of a tax audit.

In the fourth quarter of 2012, we recorded a $124.5 million non-cash charge to the income tax provision to establish a valuation allowance against all of our U.S. deferred tax assets. In the second quarter of 2014 and first quarter of 2013, our acquisitions of ThingWorx and Servigistics, Inc. were accounted for as business combinations. Assets acquired, including the fair values of acquired tangible assets, intangible assets (including finite-lived acquired intangible assets totaling $32.1 million for ThingWorx and $118.3 million for Servigistics) and assumed liabilities were recorded, and we recorded net deferred tax liabilities of $8.9 million and $35.6 million, respectively, primarily related to the tax effect of the acquired intangible assets that are not deductible for income tax purposes. These net deferred tax liabilities reduced our net deferred tax asset balance and resulted in a tax benefit of $8.9 million related to ThingWorx recorded in the second quarter of 2014 and $32.6 million related to Servigistics recorded in the first quarter of 2013 to decrease our valuation allowance in jurisdictions where we have recorded a valuation allowance (primarily the U.S.). As these decreases in the valuation allowance were not part of the accounting for the business combinations (the fair value of the assets acquired and liabilities assumed), they were recorded as income tax benefits.

As of June 28, 2014 and September 30, 2013, we had unrecognized tax benefits of $14.9 million and $13.7 million, respectively. If all of our unrecognized tax benefits as of June 28, 2014 were to become recognizable in the future, we would record a benefit to the income tax provision of $13.7 million which would be partially offset by an increase in the U.S. valuation allowance of $6.9 million.

Although we believe our tax estimates are appropriate, the final determination of tax audits and any related litigation could result in favorable or unfavorable changes in our estimates. We believe it is reasonably possible that within the next 12 months the amount of unrecognized tax benefits related to the resolution of multi-jurisdictional tax positions could be reduced by up to $2 million as audits close and statutes of limitations expire.

We follow the with-and-without approach for the direct effects of windfall tax deductions to determine the timing of the recognition of benefits for windfall tax deductions. In the third quarter and first nine months of 2014, we recorded windfall tax benefits of $1.5 million and $9.6 million to additional paid-in capital.