Interim Consolidated Financial Statements (Policies)

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Recently Adopted/New Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Date Issued and Topic	Date Adopted and Method	Description	Impact
February 2016 Leases	January 1, 2019 Effective Date Method	The new standard replaces the existing guidance on leases and requires the lessee to recognize a right-of-use ("ROU") asset and a lease liability for all leases with lease terms equal to or greater than twelve months. For finance leases, the lessee recognizes interest expense and amortization of the ROU asset, and for operating leases, the lessee recognizes total lease expense on a straight-line basis. The standard offers several practical expedients for transition and certain expedients specific to lessees or lessors. The standard allows for two methods of adoption: retrospective to each prior reporting period presented with the cumulative effect of adoption recognized at the beginning of the earliest period presented or retrospective to the beginning of the period of adoption through a cumulative-effect adjustment (the "Effective Date Method").	See Note 6 for the impact of adoption of this standard.
March 2017 Nonrefundable Fees and Other Costs	January 1, 2019 Modified Retrospective	This update shortens the amortization period for certain callable debt securities held at a premium to the earliest call date. The amendments do not require an accounting change for securities held at a discount. Upon adoption, entities are required to use a modified retrospective transition with the cumulative effect adjustment recognized to retained earnings as of the beginning of the period of adoption.	The adoption of this update did not have an impact on our financial statements.
August 2018 Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement ("CCA") that is a Service Contract	Early adoption on January 1, 2019 Prospective	This update aligns the accounting for costs incurred to implement a CCA that is a service arrangement with the guidance on capitalizing costs associated with developing or obtaining internal-use software. In addition, this update clarifies the financial statement presentation requirement for capitalized implementation costs and related amortization of such costs.	The adoption of this update did not have an impact on our financial statements.