Basis of Presentation and Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2019
Accounting Policies [Abstract]
Accounting developments	Accounting Developments Pronouncements Implemented In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No.2016-02, Leases (Topic 842) ("New Lease Standard"). The New Lease Standard increases transparency and comparability by requiring lessees to recognize right-of-use (“ROU”) assets and lease liabilities for operating leases on their consolidated balance sheets. Additionally, expanded disclosures are required to enable users of financial statements to understand the amount, timing and uncertainty of cash flows arising from leases. We adopted the New Lease Standard effective January 1, 2019, utilizing the modified retrospective approach and elected an initial application date of January 1, 2019. The adoption resulted in an increase to total assets and liabilities due to the recording of lease ROU assets and lease liabilities of approximately $210 million as of January 1, 2019. The adoption did not materially impact our condensed consolidated results of operations or cash flows. Refer to Note 4 for further discussion of our adoption of the New Lease Standard. On July 13, 2017, the FASB issued ASU No. 2017-11, “Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatory Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatory Redeemable Noncontrolling Interests with a Scope Exception.” The ASU amends guidance in FASB Accounting Standards Codification ("ASC") 260, Earnings Per Share, FASB ASC 480, Distinguishing Liabilities from Equity, and FASB ASC 815, Derivatives and Hedging. The amendments in Part I of this ASU change the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. The amendments in this ASU must be applied to annual reporting periods beginning after December 15, 2018. Our adoption of ASU No. 2017-11 effective January 1, 2019 did not have an impact on our condensed consolidated financial condition and results of operations. On August 28, 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging (Topic 815): Targeted improvements of Accounting for Hedging Activities." The purpose of this ASU is to better align a company’s risk management activities and financial reporting for hedging relationships. Additionally, the ASU simplifies the hedge accounting requirements and improve the disclosures of hedging arrangements. The amendments in this ASU must be applied to annual reporting periods beginning after December 15, 2019. Early adoption is permitted. Our adoption of ASU No. 2017-12 effective January 1, 2019 did not have an impact on our condensed consolidated financial condition and results of operations. In February 2018, the FASB issued ASU No. 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Comprehensive Income (“AOCI”)." The ASU and its amendments were issued as a result of the enactment of the U.S. Tax Cuts and Jobs Act of 2017. The amendments of this ASU address the available options to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change (or portion thereof) is recorded. Additionally, the ASU outlines the disclosure requirements for releasing income tax effects from AOCI. The ASU is effective for fiscal years beginning after December 15, 2018. The ASU should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. We elected not to reclassify the income tax effects of the Tax Cuts and Jobs Act from accumulated comprehensive income to retained earnings. In July 2018, the FASB issued ASU No. 2018-07, "Compensation - Stock Compensation (Topic 718) - Improvements to Non-employee Share-based Payment Accounting." The amendments of this ASU apply to all share-based payment transactions to non-employees, in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations, accounted under ASC 505-50, Equity-Based Payments to Non-Employees. Under the amendments of ASU 2018-07, most of the guidance on compensation to non-employees would be aligned with the requirements for shared based payments granted to employees, Topic 718. The ASU is effective for fiscal years beginning after December 15, 2018. Our adoption of ASU No. 2018-07-12 effective January 1, 2019 did not have an impact on our condensed consolidated financial condition and results of operations. Pronouncements Not Yet Implemented In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments-Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments." The ASU requires, among other things, the use of a new current expected credit loss ("CECL") model in order to determine allowances for doubtful accounts with respect to accounts receivable and contract assets. The CECL model requires that companies estimate the lifetime of an expected credit loss with respect to receivables and contract assets and record allowances that, when deducted from the balance of the receivables, represent the net amounts expected to be collected. Companies will also be required to disclose information about how the allowances were developed, including changes in the factors that influenced our estimate of expected credit losses and the reasons for those changes. The amendments of the ASU are effective for fiscal years beginning after December 15, 2019. We are currently evaluating the impact of ASU No. 2016-13 and other related ASUs on our consolidated financial condition and results of operations. In January 2017, the FASB issued ASU No. 2017-04, "Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment." The amendments in this ASU allow companies to apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit’s carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The amendments of the ASU are effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We are currently evaluating the impact of ASU No. 2017-04 on our consolidated financial condition and results of operations. In August 2018, the FASB issued ASU No. 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement." The amendments of the ASU modify the disclosure requirements for fair value measurements by removing, modifying, or adding certain disclosure information requirements for assets and liabilities measured at fair value in the statement of financial position or disclosed in the notes to financial statements. The ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, with early adoption permitted for the removed disclosures and delayed adoption until fiscal year 2020 permitted for the new disclosures. The removed and modified disclosures will be adopted on a retrospective basis and the new disclosures will be adopted on a prospective basis. We are currently evaluating the impact of ASU No. 2018-13 on our consolidated financial condition and results of operations. In August 2018, the FASB issued ASU No. 2018-14, "Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans." The ASU amends the disclosure requirements by adding, clarifying, or removing certain disclosures for sponsor defined benefit pension or other postretirement plans. The amendments are effective for fiscal years ending after December 15, 2020 and the amendments should be applied retrospectively to all periods presented. We are currently evaluating the impact of ASU No. 2018-14 on our consolidated financial condition and results of operations. In August 2018, the FASB issued ASU No. 2018-15, "Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract." The ASU addresses how entities should account for costs associated with implementing a cloud computing arrangement that is considered a service contract. Per the amendments of the ASU, implementation costs incurred in a cloud computing arrangement that is a service contract should be accounted for in the same manner as implementation costs incurred to develop or obtain software for internal use as prescribed by guidance in ASC 350-40. The ASU requires that implementation costs incurred in a cloud computing arrangement be capitalized rather than expensed. Further, the ASU specifies the method for the amortization of costs incurred during implementation, and the manner in which the unamortized portion of these capitalized implementation costs should be evaluated for impairment. The ASU also provides guidance on how to present such implementation costs in the financial statements and also creates additional disclosure requirements. The amendments are effective for fiscal years beginning after December 15, 2019. Early adoption of the ASU requirements is permitted, including adoption in any interim period. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. We are currently evaluating the impact of ASU No. 2018-15 on our consolidated financial condition and results of operations. In October 2018, the FASB issued ASU No. 2018-17, "Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities ("VIEs")." The standard reduces the cost and complexity of financial reporting associated with VIEs. The new standard amends the guidance for determining whether a decision-making fee is a VIE. The amendments require organizations to consider indirect interests held through related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety as currently required in GAAP. The amendments of this ASU are effective for fiscal years beginning after December 15, 2019. We are currently evaluating the impact of ASU No. 2018-17 on our consolidated financial condition and results of operations. In November 2018, the FASB issued ASU No. 2018-18, "Collaborative Arrangements (Topic 808): Clarifying the Interaction Between Topic 808 and Topic 606." The ASU clarifies the interaction between the guidance for certain collaborative arrangements and the New Revenue Standard. The amendments of the ASU provide guidance on how to assess whether certain transactions between collaborative arrangement participants should be accounted for within the New Revenue Standard. The ASU also provides more comparability in the presentation of revenue for certain transactions between collaborative arrangement participants. Parts of the collaborative arrangement that are not in the purview of the revenue recognition standard should be presented separately. The amendments are effective for fiscal years beginning after December 15, 2019. Early adoption is permitted. We are currently evaluating the impact of ASU No. 2018-18 on our consolidated financial condition and results of operations.
Fair Value	Fair Value Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Where available, fair value is based on observable market prices or parameters or derived from such prices or parameters. Where observable prices or inputs are not available, valuation models may be applied. Assets and liabilities recorded at fair value in our condensed consolidated balance sheets are categorized by hierarchical levels based upon the level of judgment associated with the inputs used to measure their fair values. Recurring fair value measurements are limited to investments in derivative instruments. The fair value measurements of our derivative instruments are determined using models that maximize the use of the observable market inputs including interest rate curves and both forward and spot prices for currencies, and are classified as Level II under the fair value hierarchy. The fair values of our derivatives are included in Note 6.

In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No.2016-02, Leases (Topic 842) ("New Lease Standard"). The New Lease Standard increases transparency and comparability by requiring lessees to recognize right-of-use (“ROU”) assets and lease liabilities for operating leases on their consolidated balance sheets. Additionally, expanded disclosures are required to enable users of financial statements to understand the amount, timing and uncertainty of cash flows arising from leases.

We adopted the New Lease Standard effective January 1, 2019, utilizing the modified retrospective approach and elected an initial application date of January 1, 2019. The adoption resulted in an increase to total assets and liabilities due to the recording of lease ROU assets and lease liabilities of approximately $210 million as of January 1, 2019. The adoption did not materially impact our condensed consolidated results of operations or cash flows. Refer to Note 4 for further discussion of our adoption of the New Lease Standard.

On July 13, 2017, the FASB issued ASU No. 2017-11, “Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatory Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatory Redeemable Noncontrolling Interests with a Scope Exception.” The ASU amends guidance in FASB Accounting Standards Codification ("ASC") 260, Earnings Per Share, FASB ASC 480, Distinguishing Liabilities from Equity, and FASB ASC 815, Derivatives and Hedging. The amendments in Part I of this ASU change the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. The amendments in this ASU must be applied to annual reporting periods beginning after December 15, 2018. Our adoption of ASU No. 2017-11 effective January 1, 2019 did not have an impact on our condensed consolidated financial condition and results of operations.

On August 28, 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging (Topic 815): Targeted improvements of Accounting for Hedging Activities." The purpose of this ASU is to better align a company’s risk management activities and financial reporting for hedging relationships. Additionally, the ASU simplifies the hedge accounting requirements and improve the disclosures of hedging arrangements. The amendments in this ASU must be applied to annual reporting periods beginning after December 15, 2019. Early adoption is permitted. Our adoption of ASU No. 2017-12 effective January 1, 2019 did not have an impact on our condensed consolidated financial condition and results of operations.

In February 2018, the FASB issued ASU No. 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Comprehensive Income (“AOCI”)." The ASU and its amendments were issued as a result of the enactment of the U.S. Tax Cuts and Jobs Act of 2017. The amendments of this ASU address the available options to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change (or portion thereof) is recorded. Additionally, the ASU outlines the disclosure requirements for releasing income tax effects from AOCI. The ASU is effective for fiscal years beginning after December 15, 2018. The ASU should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. We elected not to reclassify the income tax effects of the Tax Cuts and Jobs Act from accumulated comprehensive income to retained earnings.

In July 2018, the FASB issued ASU No. 2018-07, "Compensation - Stock Compensation (Topic 718) - Improvements to Non-employee Share-based Payment Accounting." The amendments of this ASU apply to all share-based payment transactions to non-employees, in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations, accounted under ASC 505-50, Equity-Based Payments to Non-Employees. Under the amendments of ASU 2018-07, most of the guidance on compensation to non-employees would be aligned with the requirements for shared based payments granted to employees, Topic 718. The ASU is effective for fiscal years beginning after December 15, 2018. Our adoption of ASU No. 2018-07-12 effective January 1, 2019 did not have an impact on our condensed consolidated financial condition and results of operations.

In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments-Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments." The ASU requires, among other things, the use of a new current expected credit loss ("CECL") model in order to determine allowances for doubtful accounts with respect to accounts receivable and contract assets. The CECL model requires that companies estimate the lifetime of an expected credit loss with respect to receivables and contract assets and record allowances that, when deducted from the balance of the receivables, represent the net amounts expected to be collected. Companies will also be required to disclose information about how the allowances were developed, including changes in the factors that influenced our estimate of expected credit losses and the reasons for those changes. The amendments of the ASU are effective for fiscal years beginning after December 15, 2019. We are currently evaluating the impact of ASU No. 2016-13 and other related ASUs on our consolidated financial condition and results of operations.

In January 2017, the FASB issued ASU No. 2017-04, "Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment." The amendments in this ASU allow companies to apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit’s carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The amendments of the ASU are effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We are currently evaluating the impact of ASU No. 2017-04 on our consolidated financial condition and results of operations.

In August 2018, the FASB issued ASU No. 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement." The amendments of the ASU modify the disclosure requirements for fair value measurements by removing, modifying, or adding certain disclosure information requirements for assets and liabilities measured at fair value in the statement of financial position or disclosed in the notes to financial statements. The ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, with early adoption permitted for the removed disclosures and delayed adoption until fiscal year 2020 permitted for the new disclosures. The removed and modified disclosures will be adopted on a retrospective basis and the new disclosures will be adopted on a prospective basis. We are currently evaluating the impact of ASU No. 2018-13 on our consolidated financial condition and results of operations.

In August 2018, the FASB issued ASU No. 2018-14, "Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans." The ASU amends the disclosure requirements by adding, clarifying, or removing certain disclosures for sponsor defined benefit pension or other postretirement plans. The amendments are effective for fiscal years ending after December 15, 2020 and the amendments should be applied retrospectively to all periods presented. We are currently evaluating the impact of ASU No. 2018-14 on our consolidated financial condition and results of operations.

In August 2018, the FASB issued ASU No. 2018-15, "Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract." The ASU addresses how entities should account for costs associated with implementing a cloud computing arrangement that is considered a service contract. Per the amendments of the ASU, implementation costs incurred in a cloud computing arrangement that is a service contract should be accounted for in the same manner as implementation costs incurred to develop or obtain software for internal use as prescribed by guidance in ASC 350-40. The ASU requires that implementation costs incurred in a cloud computing arrangement be capitalized rather than expensed. Further, the ASU specifies the method for the amortization of costs incurred during implementation, and the manner in which the unamortized portion of these capitalized implementation costs should

be evaluated for impairment. The ASU also provides guidance on how to present such implementation costs in the financial statements and also creates additional disclosure requirements. The amendments are effective for fiscal years beginning after December 15, 2019. Early adoption of the ASU requirements is permitted, including adoption in any interim period. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. We are currently evaluating the impact of ASU No. 2018-15 on our consolidated financial condition and results of operations.

In October 2018, the FASB issued ASU No. 2018-17, "Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities ("VIEs")." The standard reduces the cost and complexity of financial reporting associated with VIEs. The new standard amends the guidance for determining whether a decision-making fee is a VIE. The amendments require organizations to consider indirect interests held through related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety as currently required in GAAP. The amendments of this ASU are effective for fiscal years beginning after December 15, 2019. We are currently evaluating the impact of ASU No. 2018-17 on our consolidated financial condition and results of operations.

In November 2018, the FASB issued ASU No. 2018-18, "Collaborative Arrangements (Topic 808): Clarifying the Interaction Between Topic 808 and Topic 606." The ASU clarifies the interaction between the guidance for certain collaborative arrangements and the New Revenue Standard. The amendments of the ASU provide guidance on how to assess whether certain transactions between collaborative arrangement participants should be accounted for within the New Revenue Standard. The ASU also provides more comparability in the presentation of revenue for certain transactions between collaborative arrangement participants. Parts of the collaborative arrangement that are not in the purview of the revenue recognition standard should be presented separately. The amendments are effective for fiscal years beginning after December 15, 2019. Early adoption is permitted. We are currently evaluating the impact of ASU No. 2018-18 on our consolidated financial condition and results of operations.