Recently Issued Accounting Guidance	12 Months Ended
Dec. 31, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Guidance	RECENTLY ISSUED ACCOUNTING GUIDANCE Recently Adopted Accounting Pronouncements On January 1, 2018, we adopted ASC Topic 606, “Revenue from Contracts with Customers” and related amendments (“new revenue standard”) using the modified retrospective method applied to those revenue contracts which were not completed as of January 1, 2018. See Note 4 of our Notes to Condensed Consolidated Financial Statements for additional information regarding the impacts of the new revenue standard. In January 2016, the Financial Accounting Standards Board ("FASB") issued guidance which addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This guidance was effective for us beginning January 1, 2018, and did not have a material effect on our consolidated financial statements. In December 2017, The U.S. Tax Cuts and Jobs Act (“The Act”) was enacted, significantly altering U.S. corporate income tax law. The FASB has issued guidance related to the newly enacted corporate income tax law changes enacted in December 2017. As of December 31, 2018, the impacts of The Act have been finalized. See Note 13 of our Notes to Consolidated Financial Statements for additional information regarding the impacts of The Act. Pronouncements Issued But Not Yet Adopted In February 2016, the FASB issued guidance which requires recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. This guidance, including subsequent amendments, is effective for us beginning January 1, 2019, with early adoption permitted. The provisions of this guidance are to be applied using a modified retrospective approach at either the adoption date or the beginning of the earliest comparative period presented in the financial statements. We will not early adopt this guidance, and have determined that we will utilize certain initial calculational guidance for existing leases provided in the standard for use in the modified retrospective approach. We will apply this guidance as of the adoption date, January 1, 2019. We have largely completed the process of gathering information about our lease arrangements, and evaluating provisions of our leases against the recognition requirements of the new guidance. Additionally, we are implementing an integrated lease information system solution and changes to internal procedures necessary to meet the requirements of the new guidance. Upon adoption of the guidance as of January 1, 2019, we expect to record a right-of-use asset and lease liability related to our operating leases of approximately $250.0 million. The accounting for our existing capital leases (now called finance leases) will remain largely unchanged. We continue to asses all potential impacts of the guidance and given normal ongoing business dynamics, preliminary conclusions are subject to change.

RECENTLY ISSUED ACCOUNTING GUIDANCE

Recently Adopted Accounting Pronouncements

On January 1, 2018, we adopted ASC Topic 606, “Revenue from Contracts with Customers” and related amendments (“new revenue standard”) using the modified retrospective method applied to those revenue contracts which were not completed as of January 1, 2018. See Note 4 of our Notes to Condensed Consolidated Financial Statements for additional information regarding the impacts of the new revenue standard.

In January 2016, the Financial Accounting Standards Board ("FASB") issued guidance which addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This guidance was effective for us beginning January 1, 2018, and did not have a material effect on our consolidated financial statements.

In December 2017, The U.S. Tax Cuts and Jobs Act (“The Act”) was enacted, significantly altering U.S. corporate income tax law. The FASB has issued guidance related to the newly enacted corporate income tax law changes enacted in December 2017. As of December 31, 2018, the impacts of The Act have been finalized. See Note 13 of our Notes to Consolidated Financial Statements for additional information regarding the impacts of The Act.

Pronouncements Issued But Not Yet Adopted

In February 2016, the FASB issued guidance which requires recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. This guidance, including subsequent amendments, is effective for us beginning January 1, 2019, with early adoption permitted. The provisions of this guidance are to be applied using a modified retrospective approach at either the adoption date or the beginning of the earliest comparative period presented in the financial statements. We will not early adopt this guidance, and have determined that we will utilize certain initial calculational guidance for existing leases provided in the standard for use in the modified retrospective approach. We will apply this guidance as of the adoption date, January 1, 2019. We have largely completed the process of gathering information about our lease arrangements, and evaluating provisions of our leases against the recognition requirements of the new guidance. Additionally, we are implementing an integrated lease information system solution and changes to internal procedures necessary to meet the requirements of the new guidance. Upon adoption of the guidance as of January 1, 2019, we expect to record a right-of-use asset and lease liability related to our operating leases of approximately $250.0 million. The accounting for our existing capital leases (now called finance leases) will remain largely unchanged. We continue to asses all potential impacts of the guidance and given normal ongoing business dynamics, preliminary conclusions are subject to change.