New Accounting Standards	6 Months Ended
New Accounting Standards	Jun. 30, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Standards	New Accounting Standards Recently Adopted Standards In August 2018, the SEC adopted a final release which would eliminate or modify certain disclosure requirements that are redundant, outdated, or duplicative of U.S. GAAP or other regulatory requirements. Among other changes, the amendments provide that disclosure requirements related to the analysis of shareholders’ equity are expanded for interim purposes. An analysis of the changes in each caption of shareholders’ equity presented in the balance sheet must be provided in a note or separate statement, as well as the amount of dividends per share for each class of shares. We provided this disclosure beginning in the first quarter of 2019. Please refer to Note 12, Shareholders’ Equity. In June 2018, the Financial Accounting Standards Board (“FASB”) issued guidance which expands the scope of accounting for share-based payment arrangements to include share-based payment transactions for acquiring goods and services from nonemployees. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2018. Early adoption was permitted. We adopted this guidance as of January 1, 2019, on a prospective basis. The adoption did not have a material impact on our financial statements. In February 2018, the FASB issued guidance to address a specific consequence of the Tax Cuts and Jobs Acts (the “2017 Tax Act”) by allowing a reclassification from accumulated other comprehensive income (loss) to retained earnings for stranded tax effects resulting from the 2017 Tax Act’s reduction of the U.S. federal corporate income tax rate. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2018. Early adoption was permitted. We adopted this guidance as of January 1, 2019, on a prospective basis, but elected to not reclassify from accumulated other comprehensive income (loss) to retained earnings the stranded tax effects resulting from the 2017 Tax Act’s reduction of the U.S. federal corporate income tax rate. In August 2017, the FASB issued guidance which expands and refines hedge accounting for both nonfinancial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2018. Early adoption was permitted. We adopted this guidance as of January 1, 2019, on a prospective basis. The adoption did not have a material impact on our financial statements. In February 2016, the FASB issued guidance on the accounting for leases, Accounting Standards Codification (“ASC”) Topic 842 (“ASC 842”). This guidance requires lessees to recognize lease assets and lease liabilities on the balance sheet and to expand disclosures about leasing arrangements, both qualitative and quantitative. In terms of transition, the guidance requires adoption based upon a modified retrospective approach. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2018. Early adoption was permitted. We adopted this guidance as of January 1, 2019, using the modified retrospective approach that allows companies to apply ASC 842 as of the effective date and on a prospective basis. Please refer to Note 6, Leases, for additional information. Standards Issued Not Yet Adopted In April 2019, the FASB issued guidance which clarifies and improves areas of guidance related to the new credit losses, hedging, and recognition and measurement standards. This guidance is effective for the same fiscal years in which the original standards are effective or, if already implemented, annual periods beginning after the issuance of this guidance. Early adoption is permitted. We are currently evaluating our adoption timing and the impact that this guidance may have on our financial statements. In August 2018, the FASB issued guidance to align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by this update. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2019. Early adoption is permitted, including adoption in any interim period. We are currently evaluating our adoption timing and the impact that this guidance may have on our financial statements. In August 2018, the FASB issued guidance which modifies the disclosure requirements for defined benefit pension plans and other postretirement plans. The guidance removes disclosures that no longer are considered cost beneficial, clarifies the specific requirements of disclosures, and adds disclosure requirements identified as relevant. This guidance is effective for fiscal years ending after December 15, 2020. Early adoption is permitted. We believe that the adoption of this guidance will not have a material impact on our financial statements. In August 2018, the FASB issued guidance which modifies the disclosure requirements on fair value measurements by removing, modifying, or adding certain disclosures. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2019. Early adoption is permitted. We believe that the adoption of this guidance will not have a material impact on our financial statements. In June 2016, the FASB issued guidance which provides financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments held by a reporting entity at each reporting date. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2019. Early adoption is permitted. We believe that the adoption of this guidance will not have a material impact on our financial statements.