New Accounting Pronouncements	3 Months Ended
Mar. 31, 2019
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements Accounting Standards Adopted in the Current Period We have implemented all new accounting pronouncements that are in effect and that management believes would materially affect our financial statements. In February 2016, the FASB established Topic 842, Leases, by issuing ASU 2016-02, which requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. Topic 842 was subsequently amended by ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842; ASU 2018-10, Codification Improvements to Topic 842, Leases; and ASU 2018-11, Targeted Improvements. The new standard establishes a ROU model that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than twelve months. Leases will be classified as finance or operating, with classification affecting the pattern and classification of expense recognition in the income statement. We adopted the new standard on January 1, 2019 and used the effective date as our date of initial application. The new standard provides a number of optional practical expedients in transition. We elected the following practical expedients: (1) ‘package of practical expedients’, which permits us not to reassess under the new standard our prior conclusions about lease identification, lease classification, and initial direct costs; (2) the short-term lease recognition exemption for all leases that qualify; and (3) the practical expedient to not separate lease and non-lease components for all of our leases. This standard had a material effect on our financial statements. The most significant effects relate to: (1) the recognition of new ROU assets and lease liabilities on our balance sheet for our equipment, building, and vehicle operating leases; (2) the derecognition of existing assets and liabilities for straight line lease accounting under ASC 840 Leases; and (3) providing significant new disclosures about our leasing activities. On adoption, we recognized additional operating liabilities of $70.9 million, with corresponding ROU assets of the same amount based on the present value of the remaining minimum rental payments under current leasing standards for existing operating leases. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The objective of this ASU is to improve the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements and make certain targeted improvements to simplify the application of the hedge accounting guidance in current GAAP. This standard is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted for any interim period after issuance of the ASU. Our analysis of ASU 2017-12 was completed during 2018 and there is no material change to our financial position, results of operations, and cash flows. We adopted ASU 2017-12 effective January 1, 2019. In October 2018, the FASB issued ASU 2018-16, Derivatives and Hedging (Topic 815)-Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes. This standard is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted for any interim period after issuance of the ASU. Our analysis of ASU 2018-16 was completed during 2018 and there is no material change to our financial position, results of operations, and cash flows. We adopted ASU 2018-16 effective January 1, 2019. In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This standard is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted for any interim period after issuance of the ASU. Our analysis of ASU 2018-02 was completed during 2018 and there is no material change to our financial position, results of operations, and cash flows. We adopted ASU 2018-02 effective January 1, 2019. New Accounting Standards to be Adopted in Future Periods In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This standard is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and early adoption is permitted for annual or interim goodwill impairment tests performed on testing dates after January 1, 2017. Our evaluation of this standard is currently ongoing, and we expect to adopt ASU 2017-04 effective on January 1, 2020. In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This standard is effective for fiscal years beginning after December 15, 2019, and early adoption is permitted for any interim period after issuance of the ASU. Our evaluation of this standard is currently ongoing, and we expect to adopt ASU 2018-18 effective on January 1, 2020.

New Accounting Pronouncements

Accounting Standards Adopted in the Current Period

We have implemented all new accounting pronouncements that are in effect and that management believes would materially affect our financial statements.

In February 2016, the FASB established Topic 842, Leases, by issuing ASU 2016-02, which requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. Topic 842 was subsequently amended by ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842; ASU 2018-10, Codification Improvements to Topic 842, Leases; and ASU 2018-11, Targeted Improvements. The new standard establishes a ROU model that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than twelve months. Leases will be classified as finance or operating, with classification affecting the pattern and classification of expense recognition in the income statement.

We adopted the new standard on January 1, 2019 and used the effective date as our date of initial application. The new standard provides a number of optional practical expedients in transition. We elected the following practical expedients: (1) ‘package of practical expedients’, which permits us not to reassess under the new standard our prior conclusions about lease identification, lease classification, and initial direct costs; (2) the short-term lease recognition exemption for all leases that qualify; and (3) the practical expedient to not separate lease and non-lease components for all of our leases.

This standard had a material effect on our financial statements. The most significant effects relate to: (1) the recognition of new ROU assets and lease liabilities on our balance sheet for our equipment, building, and vehicle operating leases; (2) the derecognition of existing assets and liabilities for straight line lease accounting under ASC 840 Leases; and (3) providing significant new disclosures about our leasing activities. On adoption, we recognized additional operating liabilities of $70.9 million, with corresponding ROU assets of the same amount based on the present value of the remaining minimum rental payments under current leasing standards for existing operating leases.

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The objective of this ASU is to improve the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements and make certain targeted improvements to simplify the application of the hedge accounting guidance in current GAAP. This standard is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted for any interim period after issuance of the ASU. Our analysis of ASU 2017-12 was completed during 2018 and there is no material change to our financial position, results of operations, and cash flows. We adopted ASU 2017-12 effective January 1, 2019.

In October 2018, the FASB issued ASU 2018-16, Derivatives and Hedging (Topic 815)-Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes. This standard is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted for any interim period after issuance of the ASU. Our analysis of ASU 2018-16 was completed during 2018 and there is no material change to our financial position, results of operations, and cash flows. We adopted ASU 2018-16 effective January 1, 2019.

In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This standard is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted for any interim period after issuance of the ASU. Our analysis of ASU 2018-02 was completed during 2018 and there is no material change to our financial position, results of operations, and cash flows. We adopted ASU 2018-02 effective January 1, 2019.

New Accounting Standards to be Adopted in Future Periods

In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This standard is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and early adoption is permitted for annual or interim goodwill impairment tests performed on testing dates after January 1, 2017. Our evaluation of this standard is currently ongoing, and we expect to adopt ASU 2017-04 effective on January 1, 2020.

In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This standard is effective for fiscal years beginning after December 15, 2019, and early adoption is permitted for any interim period after issuance of the ASU. Our evaluation of this standard is currently ongoing, and we expect to adopt ASU 2018-18 effective on January 1, 2020.