Recently Adopted Standards and Issued Accounting Standards (Notes)	6 Months Ended
Jun. 30, 2016
Accounting Policies [Abstract]
Recently Adopted Standards and Issued Accounting Standards	Recently Adopted Standards and Issued Accounting Standards Recently Adopted Accounting Standards — In March 2016, the Financial Accounting Standards Board (FASB) issued new guidance which simplifies the accounting for share-based compensation arrangements, including the income tax consequences and classification on the statement of cash flows. Under the new guidance, excess tax benefits and tax deficiencies are recognized as a discrete component of the income tax provision in the period they occur and not as an adjustment to additional paid-in capital. Also, a company's payments for tax withholdings should be classified in the statement of cash flows as a financing activity. It also requires excess tax benefits to be recorded on the exercise or vesting of share-based awards at the time they are deductible for income taxes and not when they reduce cash taxes. In addition, a company can now elect to record forfeitures of share-based awards as they occur or record estimated forfeitures with a true-up at the end of the vesting period. We have elected to early adopt this guidance effective January 1, 2016. The adoption was on a modified retrospective transition method basis and therefore had no impact on prior years. The impact of adopting this guidance was to record $14.7 million of previously unrecognized tax benefits, increasing deferred tax assets and opening retained earnings. We have elected to adopt a policy of recording actual forfeitures, the impact of which is immaterial to current or prior periods. In August 2014, the FASB issued new guidance related to the disclosures around consideration of going concern. The new standard provides guidance around management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. The new standard was effective for us January 1, 2016. The adoption of this standard did not have a material impact on our consolidated financial statements. Recently Issued Accounting Standards — In February 2016, the FASB issued new guidance on the accounting for leases. Under this guidance, lessees will be required to recognize a lease liability and a right-of-use asset for all leases (with the exception of short-term leases) at the commencement date. The new guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2018. Early adoption is permitted. We are currently evaluating the impact of this guidance on our consolidated financial statements. In January 2016, the FASB issued new guidance on the recognition and measurement of financial instruments. This guidance primarily affects the accounting for equity method investments, financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. The standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. We are currently evaluating the impact of this guidance on our consolidated financial statements. In May 2014, the FASB issued new guidance on revenue recognition. Under this new standard, an entity shall recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard creates a five-step process that requires entities to exercise judgment when considering the terms of the contract(s) and all relevant facts and circumstances. This standard permits the use of either the retrospective or cumulative effect transition method and will be effective for us beginning in 2018. Early adoption is permitted in 2017. We are currently evaluating the impact this guidance will have on our consolidated financial statements and have not yet determined a transition method. In 2016, the FASB issued new guidance that changes the impairment model for most financial assets and certain other instruments. For trade and other receivables, held-to-maturity debt securities, loans and other instruments, entities will be required to use a new forward-looking “expected loss” model that will replace today’s “incurred loss” model and generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to current practice, except that the losses will be recognized as an allowance. The guidance is effective in 2020 with early adoption permitted in 2019. We are currently evaluating the impact of this guidance on our financial statements and the timing of adoption.

Recently Adopted Standards and Issued Accounting Standards

Recently Adopted Accounting Standards — In March 2016, the Financial Accounting Standards Board (FASB) issued new guidance which simplifies the accounting for share-based compensation arrangements, including the income tax consequences and classification on the statement of cash flows. Under the new guidance, excess tax benefits and tax deficiencies are recognized as a discrete component of the income tax provision in the period they occur and not as an adjustment to additional paid-in capital. Also, a company's payments for tax withholdings should be classified in the statement of cash flows as a financing activity. It also requires excess tax benefits to be recorded on the exercise or vesting of share-based awards at the time they are deductible for income taxes and not when they reduce cash taxes. In addition, a company can now elect to record forfeitures of share-based awards as they occur or record estimated forfeitures with a true-up at the end of the vesting period. We have elected to early adopt this guidance effective January 1, 2016. The adoption was on a modified retrospective transition method basis and therefore had no impact on prior years. The impact of adopting this guidance was to record $14.7 million of previously unrecognized tax benefits, increasing deferred tax assets and opening retained earnings. We have elected to adopt a policy of recording actual forfeitures, the impact of which is immaterial to current or prior periods.

In August 2014, the FASB issued new guidance related to the disclosures around consideration of going concern. The new standard provides guidance around management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. The new standard was effective for us January 1, 2016. The adoption of this standard did not have a material impact on our consolidated financial statements.

Recently Issued Accounting Standards — In February 2016, the FASB issued new guidance on the accounting for leases. Under this guidance, lessees will be required to recognize a lease liability and a right-of-use asset for all leases (with the exception of short-term leases) at the commencement date. The new guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2018. Early adoption is permitted. We are currently evaluating the impact of this guidance on our consolidated financial statements.

In January 2016, the FASB issued new guidance on the recognition and measurement of financial instruments. This guidance primarily affects the accounting for equity method investments, financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. The standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. We are currently evaluating the impact of this guidance on our consolidated financial statements.

In May 2014, the FASB issued new guidance on revenue recognition. Under this new standard, an entity shall recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard creates a five-step process that requires entities to exercise judgment when considering the terms of the contract(s) and all relevant facts and circumstances. This standard permits the use of either the retrospective or cumulative effect transition method and will be effective for us beginning in 2018. Early adoption is permitted in 2017. We are currently evaluating the impact this guidance will have on our consolidated financial statements and have not yet determined a transition method.

In 2016, the FASB issued new guidance that changes the impairment model for most financial assets and certain other instruments. For trade and other receivables, held-to-maturity debt securities, loans and other instruments, entities will be required to use a new forward-looking “expected loss” model that will replace today’s “incurred loss” model and generally will result in the earlier recognition of allowances for losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to current practice, except that the losses will be recognized as an allowance. The guidance is effective in 2020 with early adoption permitted in 2019. We are currently evaluating the impact of this guidance on our financial statements and the timing of adoption.