Income Taxes	6 Months Ended
Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective income tax rate was 23% for the six months ended June 30, 2019, compared to 25% for the six months ended June 30, 2018. The difference in the effective rates for the current year compared to the prior year is primarily attributable to a reduction in the corporate income tax rate of Alberta, Canada. Additionally, the effective tax rate was impacted by the mix of pre-tax income among domestic and foreign jurisdictions, which are taxed at different rates. Incremental tax benefits associated with share-based compensation were also recognized in each period.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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