Income Taxes	3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	Income Taxes During the fourth quarter of 2017, the 2017 Tax Act was enacted in the United States. Among its many provisions, the 2017 Tax Act imposed a mandatory one-time transition tax on undistributed international earnings (Transition Tax), reduced the U.S. corporate income tax rate from 35% to 21% and created a territorial tax system. As a result of the enactment of the 2017 Tax Act, the Company recognized a provisional net income tax benefit of $39 million in 2017. Prospectively, foreign earnings of the Company's international subsidiaries will be exempt from U.S. Federal income tax upon repatriation. Notwithstanding these changes, certain non-U.S. withholding taxes and foreign exchange gains and losses will continue to be applicable upon the future repatriation of foreign earnings. During the first quarter of 2018, the Company recorded additional provisional tax expense of $1.8 million associated with the Transition Tax reflecting additional guidance issued during the period. The Company expects that the Internal Revenue Service (IRS) will continue to issue additional guidance in the subsequent quarters of 2018 related to the 2017 Tax Act. As this guidance is issued, the Company will evaluate the information to determine whether any additional adjustments to its provisional tax provisions are required. Provisional amounts include any changes as a result of future guidance and interpretations to be issued and any indirect impacts required to be recorded, including for example amounts recorded for state income taxes. The 2017 Tax Act included provisions for Global Intangible Low-Taxed Income (GILTI) under which taxes on foreign income are imposed on the excess of a deemed return on tangible assets of certain foreign subsidiaries and for Base Erosion and Anti-Abuse Tax (BEAT) under which taxes are imposed on certain base eroding payments to affiliated foreign companies. Consistent with U.S. GAAP, the Company will treat BEAT as discrete adjustments to the income tax provision when incurred in future periods for which no deferred taxes are required to be provided and has made an accounting policy election to treat GILTI taxes in a similar manner. No provision for income taxes related to GILTI or BEAT has been recorded. The components of the provisional net income tax benefit recorded in 2017 and the first quarter of 2018 are based on the then currently best available information. Additional information needs to be prepared, obtained and/or analyzed to determine the final amounts. The provisional tax expense for the mandatory repatriation of undistributed international earnings will require further analysis of certain foreign exchange gains or losses, substantiation of foreign tax credits, as well as estimated cash and cash equivalents of the Company's foreign subsidiaries. The provisional tax benefit for the remeasurement of deferred taxes will require additional information necessary for the preparation of the Company's U.S. federal tax return, and further analysis and interpretation of certain provisions of the 2017 Tax Act impacting deferred taxes, for example 100% expensing of qualified assets, could impact the Company's recorded deferred tax balances. The tax effects for these items will be recorded in subsequent quarters of 2018, as discrete adjustments to the income tax provision, once complete. The Company elected to adopt the Securities and Exchange Commission issued guidance that allows for a measurement period, not to exceed one year after the enactment date of the 2017 Tax Act, to finalize the recording of the related tax impacts. The Company will finalize its tax positions and calculations when it files its 2017 U.S. tax returns. At that point, the Company will conclude finally whether any further adjustments are required to its net current and deferred tax accounts in the U.S. as of December 31, 2017, as well as to the provisional liability associated with the Transition Tax. The Company's consolidated effective income tax rate was 31.1% for the quarter ended March 31, 2018 as compared to 37.3% for the comparable period in 2017. The lower effective tax rate in 2018 was principally due to the lower U.S. federal tax rate that resulted from the 2017 Tax Act and share-based compensation deductions, partially offset by certain expenses that are no longer deductible. As discussed, the recorded impacts of the 2017 Tax Act are provisional and the final amount may differ, possibly materially, due to, among other things, changes in estimates, interpretations and assumptions the Company has made, changes in IRS interpretations, the issuance of new guidance, legislative actions, changes in accounting standards or related interpretations in response to the 2017 Tax Act and future actions by states within the United States that have not currently adopted the 2017 Tax Act. For further information and discussion of the potential impact of the 2017 Tax Act, refer to “Item 1A. Risk Factors”, Note 5 to the consolidated financial statements and “Critical Accounting Estimates,” in the Company's 2017 Annual Report on Form 10-K.

Income Taxes

During the fourth quarter of 2017, the 2017 Tax Act was enacted in the United States. Among its many provisions, the 2017 Tax Act imposed a mandatory one-time transition tax on undistributed international earnings (Transition Tax), reduced the U.S. corporate income tax rate from 35% to 21% and created a territorial tax system. As a result of the enactment of the 2017 Tax Act, the Company recognized a provisional net income tax benefit of $39 million in 2017. Prospectively, foreign earnings of the Company's international subsidiaries will be exempt from U.S. Federal income tax upon repatriation. Notwithstanding these changes, certain non-U.S. withholding taxes and foreign exchange gains and losses will continue to be applicable upon the future repatriation of foreign earnings.

During the first quarter of 2018, the Company recorded additional provisional tax expense of $1.8 million associated with the Transition Tax reflecting additional guidance issued during the period. The Company expects that the Internal Revenue Service (IRS) will continue to issue additional guidance in the subsequent quarters of 2018 related to the 2017 Tax Act. As this guidance is issued, the Company will evaluate the information to determine whether any additional adjustments to its provisional tax provisions are required. Provisional amounts include any changes as a result of future guidance and interpretations to be issued and any indirect impacts required to be recorded, including for example amounts recorded for state income taxes.

The 2017 Tax Act included provisions for Global Intangible Low-Taxed Income (GILTI) under which taxes on foreign income are imposed on the excess of a deemed return on tangible assets of certain foreign subsidiaries and for Base Erosion and Anti-Abuse Tax (BEAT) under which taxes are imposed on certain base eroding payments to affiliated foreign companies. Consistent with U.S. GAAP, the Company will treat BEAT as discrete adjustments to the income tax provision when incurred in future periods for which no deferred taxes are required to be provided and has made an accounting policy election to treat GILTI taxes in a similar manner. No provision for income taxes related to GILTI or BEAT has been recorded.

The components of the provisional net income tax benefit recorded in 2017 and the first quarter of 2018 are based on the then currently best available information. Additional information needs to be prepared, obtained and/or analyzed to determine the final amounts. The provisional tax expense for the mandatory repatriation of undistributed international earnings will require further analysis of certain foreign exchange gains or losses, substantiation of foreign tax credits, as well as estimated cash and cash equivalents of the Company's foreign subsidiaries.

The provisional tax benefit for the remeasurement of deferred taxes will require additional information necessary for the preparation of the Company's U.S. federal tax return, and further analysis and interpretation of certain provisions of the 2017 Tax Act impacting deferred taxes, for example 100% expensing of qualified assets, could impact the Company's recorded deferred tax balances.

The tax effects for these items will be recorded in subsequent quarters of 2018, as discrete adjustments to the income tax provision, once complete. The Company elected to adopt the Securities and Exchange Commission issued guidance that allows for a measurement period, not to exceed one year after the enactment date of the 2017 Tax Act, to finalize the recording of the related tax impacts. The Company will finalize its tax positions and calculations when it files its 2017 U.S. tax returns. At that point, the Company will conclude finally whether any further adjustments are required to its net current and deferred tax accounts in the U.S. as of December 31, 2017, as well as to the provisional liability associated with the Transition Tax.

The Company's consolidated effective income tax rate was 31.1% for the quarter ended March 31, 2018 as compared to 37.3% for the comparable period in 2017. The lower effective tax rate in 2018 was principally due to the lower U.S. federal tax rate that resulted from the 2017 Tax Act and share-based compensation deductions, partially offset by certain expenses that are no longer deductible.

As discussed, the recorded impacts of the 2017 Tax Act are provisional and the final amount may differ, possibly materially, due to, among other things, changes in estimates, interpretations and assumptions the Company has made, changes in IRS interpretations, the issuance of new guidance, legislative actions, changes in accounting standards or related interpretations in response to the 2017 Tax Act and future actions by states within the United States that have not currently adopted the 2017 Tax Act. For further information and discussion of the potential impact of the 2017 Tax Act, refer to “Item 1A. Risk Factors”, Note 5 to the consolidated financial statements and “Critical Accounting Estimates,” in the Company's 2017 Annual Report on Form 10-K.