Income Taxes	9 Months Ended
Sep. 30, 2020
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The Company is required to estimate its income taxes in each of the jurisdictions in which it operates as part of the process of preparing its condensed consolidated financial statements. The Company maintains certain strategic management and operational activities in overseas subsidiaries and its foreign earnings are taxed at rates that are generally lower than in the United States. The Company’s effective tax rate generally differs from the U.S. federal statutory rate primarily due to tax credits and lower tax rates on earnings generated by the Company’s foreign operations that are taxed primarily in Switzerland. The Company’s effective tax rate was 15.3% and (150.5)% for the three months ended September 30, 2020 and 2019, respectively. The increase in the effective tax rate when comparing the three months ended September 30, 2020 to the three months ended September 30, 2019, was primarily due to tax items unique to the period ended September 30, 2019. These amounts include an estimated income tax benefit of $157.7 million due to the recognition of Swiss deferred tax assets related to the enactment of the Federal Act on Tax Reform and AHV Financing (“TRAF”), as well as a $17.3 million tax benefit attributable to the 2015 U.S. federal income tax return statute of limitations closing during the three months ended September 30, 2019. The Company’s effective tax rate was 10.0% and (42.3)% for the nine months ended September 30, 2020 and 2019, respectively. The increase in the effective tax rate when comparing the nine months ended September 30, 2020 to the nine months ended September 30, 2019, was primarily due to tax items unique to the period ended September 30, 2019. These amounts include an estimated income tax benefit of $157.7 million due to the recognition of Swiss deferred tax assets related to the enactment of the TRAF, as well as a $17.3 million tax benefit attributable to the 2015 U.S. federal income tax return statute of limitations closing during the nine months ended September 30, 2019. These amounts are partially offset by additional discrete tax benefits for share-based payments during the nine months ended September 30, 2020. On May 19, 2019, Swiss voters approved the TRAF, which provides for broad changes to federal and cantonal taxation in Switzerland effective January 1, 2020. The TRAF requires the abolishment of certain favorable tax regimes, provides for certain transitional relief, and directs the cantons to implement certain mandatory measures while other provisions are at the discretion of the canton. During the period ended December 31, 2019, the Company recorded a deferred tax asset and a partial valuation allowance for the cantonal and federal impact of the TRAF. The income tax impact of the TRAF may be subject to change due to the issuance of further legislative guidance from the Swiss taxing authorities. The Company’s net unrecognized tax benefits totaled $75.0 million and $84.5 million as of September 30, 2020 and December 31, 2019, respectively. At September 30, 2020, $63.0 million included in the balance for tax positions would affect the annual effective tax rate if recognized. The Company recognizes interest accrued related to uncertain tax positions and penalties in income tax expense. As of September 30, 2020, the Company has accrued $3.9 million for the payment of interest. The Company and one or more of its subsidiaries are subject to U.S. federal income taxes in the United States, as well as income taxes of multiple state and foreign jurisdictions. The Company is currently under examination by the United States Internal Revenue Service for the 2017 and 2018 tax years. With few exceptions, the Company is generally not subject to examination for state and local income tax, or in non-U.S. jurisdictions, by tax authorities for years prior to 2017. The Company's U.S. liquidity needs are currently satisfied using cash flows generated from its U.S. operations, borrowings, or both. The Company also utilizes a variety of tax planning strategies in an effort to ensure that its worldwide cash is available in locations in which it is needed. The Company expects to repatriate a substantial portion of its foreign earnings over time, to the extent that the foreign earnings are not restricted by local laws or result in significant incremental costs associated with repatriating the foreign earnings. At September 30, 2020, the Company had $393.9 million in net deferred tax assets. The authoritative guidance requires a valuation allowance to reduce the deferred tax assets reported if, based on the weight of the evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized. The Company reviews deferred tax assets periodically for recoverability and makes estimates and judgments regarding the expected geographic sources of taxable income and gains from investments, as well as tax planning strategies in assessing the need for a valuation allowance. If the estimates and assumptions used in the Company's determination change in the future, the Company could be required to revise its estimates of the valuation allowances against its deferred tax assets and adjust its provisions for additional income taxes. On March 27, 2020, the United States enacted the Coronavirus Aid, Relief & Economic Security (“CARES”) Act. The CARES Act includes a wide variety of tax and non-tax provisions aimed to provide relief to individuals and businesses adversely affected by the COVID-19 pandemic. This legislation includes an array of tax benefits and incentives for businesses, including in part, the deferral of payment of certain employer payroll taxes. Similarly, the Swiss government enacted a number of measures to help mitigate the negative effects of COVID-19 on the Swiss economy. The Company is evaluating the impact of global COVID-19-related laws and proposed laws, however, no material impact to the Company's financial results is expected as a result of legislation enacted to date. The Company will review any guidance issued in the future by applicable tax authorities and continue to evaluate the impact of any new developments or legislation. On June 22, 2020, the US Supreme Court denied Altera Corp.’s petition for writ of certiorari and as a result the Supreme Court will not review the decision of the U.S. Court of Appeals for the Ninth Circuit that upheld the validity of the U.S. Treasury Department’s regulations requiring participants in a cost-sharing arrangement to share stock-based compensation costs. Because the Company has already accrued amounts for this uncertain tax position, there are no changes to the Company's position or treatment of its cost-sharing arrangements in the current period.

The Company is required to estimate its income taxes in each of the jurisdictions in which it operates as part of the process of preparing its condensed consolidated financial statements. The Company maintains certain strategic management and operational activities in overseas subsidiaries and its foreign earnings are taxed at rates that are generally lower than in the United States.

The Company’s effective tax rate generally differs from the U.S. federal statutory rate primarily due to tax credits and lower tax rates on earnings generated by the Company’s foreign operations that are taxed primarily in Switzerland.

The Company’s effective tax rate was 15.3% and (150.5)% for the three months ended September 30, 2020 and 2019, respectively. The increase in the effective tax rate when comparing the three months ended September 30, 2020 to the three months ended September 30, 2019, was primarily due to tax items unique to the period ended September 30, 2019. These amounts include an estimated income tax benefit of $157.7 million due to the recognition of Swiss deferred tax assets related to the enactment of the Federal Act on Tax Reform and AHV Financing (“TRAF”), as well as a $17.3 million tax benefit attributable to the 2015 U.S. federal income tax return statute of limitations closing during the three months ended September 30, 2019.

The Company’s effective tax rate was 10.0% and (42.3)% for the nine months ended September 30, 2020 and 2019, respectively. The increase in the effective tax rate when comparing the nine months ended September 30, 2020 to the nine months ended September 30, 2019, was primarily due to tax items unique to the period ended September 30, 2019. These amounts include an estimated income tax benefit of $157.7 million due to the recognition of Swiss deferred tax assets related to the enactment of the TRAF, as well as a $17.3 million tax benefit attributable to the 2015 U.S. federal income tax return statute of limitations closing during the nine months ended September 30, 2019. These amounts are partially offset by additional discrete tax benefits for share-based payments during the nine months ended September 30, 2020.

On May 19, 2019, Swiss voters approved the TRAF, which provides for broad changes to federal and cantonal taxation in Switzerland effective January 1, 2020. The TRAF requires the abolishment of certain favorable tax regimes, provides for certain transitional relief, and directs the cantons to implement certain mandatory measures while other provisions are at the discretion of the canton. During the period ended December 31, 2019, the Company recorded a deferred tax asset and a partial valuation allowance for the cantonal and federal impact of the TRAF. The income tax impact of the TRAF may be subject to change due to the issuance of further legislative guidance from the Swiss taxing authorities.

The Company’s net unrecognized tax benefits totaled $75.0 million and $84.5 million as of September 30, 2020 and December 31, 2019, respectively. At September 30, 2020, $63.0 million included in the balance for tax positions would affect the annual effective tax rate if recognized. The Company recognizes interest accrued related to uncertain tax positions and penalties in income tax expense. As of September 30, 2020, the Company has accrued $3.9 million for the payment of interest.

The Company and one or more of its subsidiaries are subject to U.S. federal income taxes in the United States, as well as income taxes of multiple state and foreign jurisdictions. The Company is currently under examination by the United States Internal Revenue Service for the 2017 and 2018 tax years. With few exceptions, the Company is generally not subject to examination for state and local income tax, or in non-U.S. jurisdictions, by tax authorities for years prior to 2017.

The Company's U.S. liquidity needs are currently satisfied using cash flows generated from its U.S. operations, borrowings, or both. The Company also utilizes a variety of tax planning strategies in an effort to ensure that its worldwide cash is available in locations in which it is needed. The Company expects to repatriate a substantial portion of its foreign earnings over time, to the extent that the foreign earnings are not restricted by local laws or result in significant incremental costs associated with repatriating the foreign earnings.

At September 30, 2020, the Company had $393.9 million in net deferred tax assets. The authoritative guidance requires a valuation allowance to reduce the deferred tax assets reported if, based on the weight of the evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized. The Company reviews deferred tax assets periodically for recoverability and makes estimates and judgments regarding the expected geographic sources of taxable income and gains from investments, as well as tax planning strategies in assessing the need for a valuation allowance. If the estimates and assumptions used in the Company's determination change in the future, the Company could be required to revise its estimates of the valuation allowances against its deferred tax assets and adjust its provisions for additional income taxes.

On March 27, 2020, the United States enacted the Coronavirus Aid, Relief & Economic Security (“CARES”) Act. The CARES Act includes a wide variety of tax and non-tax provisions aimed to provide relief to individuals and businesses adversely affected by the COVID-19 pandemic. This legislation includes an array of tax benefits and incentives for businesses, including in part, the deferral of payment of certain employer payroll taxes. Similarly, the Swiss government enacted a number of measures to help mitigate the negative effects of COVID-19 on the Swiss economy. The Company is evaluating the impact of global COVID-19-related laws and proposed laws, however, no material impact to the Company's financial results is expected as a result of legislation enacted to date. The Company will review any guidance issued in the future by applicable tax authorities and continue to evaluate the impact of any new developments or legislation.