Recently Issued Accounting Standards	9 Months Ended
Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Standards	Recently Issued Accounting Standards In February 2016, the Financial Accounting Standards Board ("FASB") issued new accounting guidance on leases. The new guidance requires that a lessee recognize assets and liabilities on the balance sheet for leases with lease terms longer than 12 months. The recognition, measurement and presentation of lease expenses and cash flows by a lessee will depend on its classification as a finance or operating lease. The guidance also includes new disclosure requirements providing information on the amounts recorded in the financial statements. The guidance can be adopted using the modified retrospective approach applying to the earliest comparative period presented, or by recognizing a cumulative-effect adjustment to retained earnings in the period of adoption without restating prior periods. We have decided to adopt the guidance recognizing any cumulative-effect adjustment to retained earnings in 2019 without restating prior periods. The new guidance is effective for us in 2019. Based on a preliminary assessment, we expect the adoption of this guidance to have a material impact on our assets and liabilities due to the recognition of right-of-use assets and lease liabilities on our Consolidated Balance Sheets. However, we do not believe the adoption will have a material impact on our Consolidated Statements of Operations, but we are still finalizing our assessment of the impact. We have completed a preliminary qualitative assessment of our lease portfolio and are in the process of implementing a new lease software system, collecting lease data and designing processes and controls to account for our leases in accordance with the new guidance. In August 2017, the FASB issued new guidance on hedge accounting. The amendments in this guidance include the elimination of the concept of recognizing periodic hedge ineffectiveness for cash flow and net investment hedges, recognition and presentation of changes in the fair value of the hedging instrument, recognition and presentation of components excluded from an entity's hedge effectiveness assessment, addition of the ability to elect to perform subsequent effectiveness assessments qualitatively, and addition of new disclosure requirements. The guidance is effective for us in 2019. We are currently assessing the impact of the adoption of this guidance on our Consolidated Financial Statements. In February 2018, the FASB issued new guidance on reporting comprehensive income. The new guidance allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the United States Tax Cuts and Jobs Act of 2017 (the "Tax Act"). The guidance is effective for us in 2019. We are currently assessing the impact of the adoption of this guidance on our Consolidated Financial Statements. In June 2018, the FASB issued new guidance on the accounting for share-based payment awards. The guidance will make the accounting for share-based payment awards issued to nonemployees largely consistent with the accounting for share-based payment awards issued to employees. The guidance is effective for us in 2019. We do not expect the adoption of this guidance to have a material impact on our Consolidated Financial Statements. In August 2018, the FASB issued new guidance on disclosures related to fair value measurements. The guidance is intended to improve the effectiveness of the notes to financial statements by facilitating clearer communication, and it includes multiple new, eliminated and modified disclosure requirements. The guidance is effective for us in 2020. The adoption of this guidance will have no impact on our Consolidated Financial Statements. In August 2018, the FASB issued new guidance on disclosures related to defined benefit plans. The guidance amends the current disclosure requirements to add, remove and clarify disclosure requirements for defined benefit pension and other postretirement plans. The guidance is effective for us in 2021. The adoption of this guidance will have no impact on our Consolidated Financial Statements. In August 2018, the FASB issued new guidance on the accounting for internal-use software. The guidance aligns the accounting for costs incurred to implement a cloud computing arrangement that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. The guidance is effective for us in 2020. We are assessing the impact of the adoption of this guidance on our Consolidated Financial Statements.

Recently Issued Accounting Standards

In February 2016, the Financial Accounting Standards Board ("FASB") issued new accounting guidance on leases. The new guidance requires that a lessee recognize assets and liabilities on the balance sheet for leases with lease terms longer than 12 months. The recognition, measurement and presentation of lease expenses and cash flows by a lessee will depend on its classification as a finance or operating lease. The guidance also includes new disclosure requirements providing information on the amounts recorded in the financial statements. The guidance can be adopted using the modified retrospective approach applying to the earliest comparative period presented, or by recognizing a cumulative-effect adjustment to retained earnings in the period of adoption without restating prior periods. We have decided to adopt the guidance recognizing any cumulative-effect adjustment to retained earnings in 2019 without restating prior periods. The new guidance is effective for us in 2019. Based on a preliminary assessment, we expect the adoption of this guidance to have a material impact on our assets and liabilities due to the recognition of right-of-use assets and lease liabilities on our Consolidated Balance Sheets. However, we do not believe the adoption will have a material impact on our Consolidated Statements of Operations, but we are still finalizing our assessment of the impact. We have completed a preliminary qualitative assessment of our lease portfolio and are in the process of implementing a new lease software system, collecting lease data and designing processes and controls to account for our leases in accordance with the new guidance.

In August 2017, the FASB issued new guidance on hedge accounting. The amendments in this guidance include the elimination of the concept of recognizing periodic hedge ineffectiveness for cash flow and net investment hedges, recognition and presentation of changes in the fair value of the hedging instrument, recognition and presentation of components excluded from an entity's hedge effectiveness assessment, addition of the ability to elect to perform subsequent effectiveness assessments qualitatively, and addition of new disclosure requirements. The guidance is effective for us in 2019. We are currently assessing the impact of the adoption of this guidance on our Consolidated Financial Statements.

In February 2018, the FASB issued new guidance on reporting comprehensive income. The new guidance allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the United States Tax Cuts and Jobs Act of 2017 (the "Tax Act"). The guidance is effective for us in 2019. We are currently assessing the impact of the adoption of this guidance on our Consolidated Financial Statements.

In June 2018, the FASB issued new guidance on the accounting for share-based payment awards. The guidance will make the accounting for share-based payment awards issued to nonemployees largely consistent with the accounting for share-based payment awards issued to employees. The guidance is effective for us in 2019. We do not expect the adoption of this guidance to have a material impact on our Consolidated Financial Statements.

In August 2018, the FASB issued new guidance on disclosures related to fair value measurements. The guidance is intended to improve the effectiveness of the notes to financial statements by facilitating clearer communication, and it includes multiple new, eliminated and modified disclosure requirements. The guidance is effective for us in 2020. The adoption of this guidance will have no impact on our Consolidated Financial Statements.

In August 2018, the FASB issued new guidance on disclosures related to defined benefit plans. The guidance amends the current disclosure requirements to add, remove and clarify disclosure requirements for defined benefit pension and other postretirement plans. The guidance is effective for us in 2021. The adoption of this guidance will have no impact on our Consolidated Financial Statements.

In August 2018, the FASB issued new guidance on the accounting for internal-use software. The guidance aligns the accounting for costs incurred to implement a cloud computing arrangement that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. The guidance is effective for us in 2020. We are assessing the impact of the adoption of this guidance on our Consolidated Financial Statements.