Recently Issued Accounting Standards	12 Months Ended
Dec. 31, 2017
Recently Issued Accounting Standards [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	Recently Issued Accounting Standards In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. This standard also includes expanded disclosure requirements that result in an entity providing users of financial statements with comprehensive information about the nature, amount, timing, and uncertainty of revenue and cash flows arising from the entity’s contracts with customers. In August 2015, ASU 2015-14 was issued deferring the effective date of ASU 2014-09 to annual reporting periods beginning after December 15, 2017 with an optional early application date for annual reporting periods beginning after December 15, 2016. The Company adopted the standard and all subsequent amendments on January 1, 2018. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the cumulative catch-up transition method). We adopted the standard using the full retrospective method to restate each prior reporting period presented. We have reached conclusions on our key accounting assessments related to the standard and have finalized our accounting policies. Based on our assessment, we believe the timing of revenue recognition for our Entertainment and Communications segment, and certain revenue streams within our IT Services and Hardware segment, will not materially change. However, the impact of the standard on the treatment of Telecom and IT hardware revenue will change our current practice of recording hardware revenue as a principal (gross) versus agent (net). Based on our assessment of ASU 2016-08, Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net), issued by the FASB in March 2016, the Company acts as an agent and as such will record Telecom and IT hardware net of the related cost of products. ASU 2016-08 clarifies the implementation guidance on principal versus agent considerations focusing on a control model rather than a risk and reward model. This adoption of this guidance is expected to change revenue and cost of products. Revenue and cost of products in 2016 and 2017 is expected to decrease by approximately $170 million and $224 million, respectively. We are continuing to finalize the analysis of hardware sales related to our fourth quarter acquisition of OnX. We do not expect that changes in accounting policies related to variable consideration or rebates will have a material effect on the financial statements. Fulfillment and acquisition costs are expected to decrease expense in both 2016 and 2017 by approximately $1 million each year. An asset related to fulfillment and acquisition costs of approximately $30 million is expected to be recorded on the balance sheet upon adoption. We are still assessing the full impact of disclosure requirements; however, upon adopting FASB ASC Topic 606, we will provide additional disclosures in the notes to the consolidated financial statements related to disaggregated revenue, contract asset balances and performance obligations. In preparation for adoption of the standard, we have implemented internal controls, new system functionality and revised business processes to prepare financial information in accordance with the standard. These new processes and procedures ensure data utilized for financial reporting is complete and accurate and is assessed in accordance with the guidelines of the standard. We are implementing new internal controls to address risks associated with applying the five-step model, as well as monitoring controls to identify new sales arrangements or changes in our business environment that will affect our current accounting assessment. In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, which amends the guidance in GAAP on the classification and measurement of financial instruments. The amended guidance requires entities to carry all investments in equity securities at fair value and changes in fair value shall be recognized through net income unless the entity has elected the practicability exception to fair value measurement. This standard will be effective for the fiscal year ending December 31, 2018 and will require a cumulative-effect adjustment to beginning retained earnings on this date. The Company adopted the standard effective January 1, 2018. The Company does not hold any equity securities as of December 31, 2017 and therefore no adjustment will be required upon adoption. In February 2016, the FASB issued ASU 2016-02, Leases, which represents a wholesale change to lease accounting. The standard introduces a lessee model that brings most leases on the balance sheet as well as aligns certain underlying principles of the new lessor model with those in ASC 606. The new standard is effective for public entities for fiscal years beginning after December 15, 2018, and lessees and lessors are required to use a modified retrospective transition method for existing leases. The Company is in the process of evaluating the impact of adoption of this ASU on the Company’s consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation, which simplifies various aspects related to how share-based payments are accounted for and presented in the financial statements. The new guidance requires excess tax benefits and tax deficiencies to be recorded in the income statement when the awards vest or are settled. In addition, cash flows related to excess tax benefits will no longer be separately classified as a financing activity apart from other income tax cash flows. The standard also allows us to repurchase more of an employee’s shares for tax withholding purposes without triggering liability accounting, clarifies that all cash payments made on an employee’s behalf for withheld shares should be presented as a financing activity on our cash flows statement, and provides an accounting policy election to account for forfeitures as they occur. The new standard was adopted effective January 1, 2017. The primary impact of adopting ASU 2016-09 is the recognition of excess tax benefits in our provision for income taxes rather than paid-in capital starting in the first quarter of fiscal year 2017. Additional amendments to the accounting for income taxes and minimum statutory withholding tax requirements had no impact to retained earnings as of the date of adoption. Effective January 1, 2017, we adopted a prospective company-wide policy change due to the change in accounting principle and now record forfeitures as they are incurred on a go-forward basis. As a result of the change in accounting principle, the cumulative-effect adjustment to retained earnings to account for the accounting policy election was immaterial to the financial statements. The presentation requirements under ASU 2016-09 for cash flows related to excess tax benefits were applied retrospectively to all periods presented and did not result in a material impact to prior period net cash provided by operations and net cash used in financing. The presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any of the periods presented in our consolidated cash flows statements since such cash flows have historically been presented as a financing activity. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flow - Classification of Certain Cash Receipts and Cash Payments, which amends ASC 230 to add or clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. The FASB issued the ASU with the intent of reducing diversity in practice. The new standard is effective for public entities for annual reporting periods beginning after December 15, 2017, including interim periods within those fiscal years. The impact of adopting this standard effective January 1, 2018 will not have a material effect on the Company’s consolidated statement of cash flows. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flow - Restricted Cash, which amends ASC 230 to require that a statement of cash flows explain the change during the period in total cash, cash equivalents and amounts described as restricted cash. As a result, amounts classified as restricted cash will now be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The new standard is effective for public entities for annual reporting periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The Company adopted the standard effective December 31, 2017. The adoption of this standard did not result in a prior period adjustment for the twelve months ended December 31, 2016 and 2015. In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment, which eliminates Step 2 from the goodwill impairment test. Under the amended guidance, the Company shall now recognize an impairment charge for the amount by which the carrying value exceeds the reporting unit's fair value. The new standard is effective for public entities for annual reporting periods beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company early adopted the amended guidance effective January 1, 2017 and applied the guidance to the annual impairment test performed in the fourth quarter of 2017. In March 2017, the FASB issued ASU 2017-07, Improving the Presentation of Net Period Pension Cost and Net Periodic Postretirement Benefit Cost, which amends the requirements in ASC 715 related to the income statement presentation of the components of net periodic benefit cost for an entity’s sponsored defined benefit pension and other postretirement plans. The ASU requires entities to disaggregate the current service cost component from the other components of net benefit cost (the “other components”) and present it with other current compensation costs for related employees in the income statement. The other components shall be presented elsewhere in the income statement and outside of income from operations, if such a subtotal is presented, on a retrospective basis as of the date of adoption. In addition, only the service cost component of net benefit cost is eligible for capitalization on a prospective basis. The ASU is effective for public business entities for annual periods beginning after December 15, 2017. The Company plans to adopt the standard effective January 1, 2018, and will be applied retrospectively for prior periods. The Company estimates approximately $2 million and $1 million of other components of net benefit cost will be re-classed from "Cost of Services" and "Selling, general and administrative," respectively, to a new line below Operating income, "Other components of pension and postretirement benefit plans expense," on the Consolidated Statements of Operations in the first quarter of 2018. In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation, which amends the scope of modification accounting for share-based payment arrangements. The ASU is effective for public business entities for annual periods beginning after December 15, 2017. The Company plans to prospectively adopt the standard effective January 1, 2018 and will apply the amended guidance to any awards modified on or after this date. In February 2018, the FASB issued ASU 2018-02 which allows entities to elect to make a one-time reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from newly enacted corporate tax rates. The guidance is effective for public entities for annual reporting periods beginning after December 15, 2018, and for interim periods within those fiscal years. Early adoption is permitted. The Company early adopted the guidance effective December 31, 2017, resulting in a provisional reclassification adjustment of $32.2 million to "Accumulated deficit" from "Other comprehensive loss" on the Consolidated Balance Sheets. The amount of the reclassification is calculated on the basis of the difference between the historical and newly enacted tax rates on deferred taxes related to our pension and postretirement benefit plans. Other accounting standards that have been issued or proposed by the FASB or other standards-setting bodies that do not require adoption until a future date are not expected to have a material impact on the Company’s consolidated financial statements upon adoption.

Recently Issued Accounting Standards

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. This standard also includes expanded disclosure requirements that result in an entity providing users of financial statements with comprehensive information about the nature, amount, timing, and uncertainty of revenue and cash flows arising from the entity’s contracts with customers. In August 2015, ASU 2015-14 was issued deferring the effective date of ASU 2014-09 to annual reporting periods beginning after December 15, 2017 with an optional early application date for annual reporting periods beginning after December 15, 2016. The Company adopted the standard and all subsequent amendments on January 1, 2018.

The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the cumulative catch-up transition method). We adopted the standard using the full retrospective method to restate each prior reporting period presented.

We have reached conclusions on our key accounting assessments related to the standard and have finalized our accounting policies. Based on our assessment, we believe the timing of revenue recognition for our Entertainment and Communications segment, and certain revenue streams within our IT Services and Hardware segment, will not materially change. However, the impact of the standard on the treatment of Telecom and IT hardware revenue will change our current practice of recording hardware revenue as a principal (gross) versus agent (net). Based on our assessment of ASU 2016-08, Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net), issued by the FASB in March 2016, the Company acts as an agent and as such will record Telecom and IT hardware net of the related cost of products. ASU 2016-08 clarifies the implementation guidance on principal versus agent considerations focusing on a control model rather than a risk and reward model. This adoption of this guidance is expected to change revenue and cost of products. Revenue and cost of products in 2016 and 2017 is expected to decrease by approximately $170 million and $224 million, respectively. We are continuing to finalize the analysis of hardware sales related to our fourth quarter acquisition of OnX. We do not expect that changes in accounting policies related to variable consideration or rebates will have a material effect on the financial statements. Fulfillment and acquisition costs are expected to decrease expense in both 2016 and 2017 by approximately $1 million each year. An asset related to fulfillment and acquisition costs of approximately $30 million is expected to be recorded on the balance sheet upon adoption. We are still assessing the full impact of disclosure requirements; however, upon adopting FASB ASC Topic 606, we will provide additional disclosures in the notes to the consolidated financial statements related to disaggregated revenue, contract asset balances and performance obligations.

In preparation for adoption of the standard, we have implemented internal controls, new system functionality and revised business processes to prepare financial information in accordance with the standard. These new processes and procedures ensure data utilized for financial reporting is complete and accurate and is assessed in accordance with the guidelines of the standard. We are implementing new internal controls to address risks associated with applying the five-step model, as well as monitoring controls to identify new sales arrangements or changes in our business environment that will affect our current accounting assessment.

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, which amends the guidance in GAAP on the classification and measurement of financial instruments. The amended guidance requires entities to carry all investments in equity securities at fair value and changes in fair value shall be recognized through net income unless the entity has elected the practicability exception to fair value measurement. This standard will be effective for the fiscal year ending December 31, 2018 and will require a cumulative-effect adjustment to beginning retained earnings on this date. The Company adopted the standard effective January 1, 2018. The Company does not hold any equity securities as of December 31, 2017 and therefore no adjustment will be required upon adoption.

In February 2016, the FASB issued ASU 2016-02, Leases, which represents a wholesale change to lease accounting. The standard introduces a lessee model that brings most leases on the balance sheet as well as aligns certain underlying principles of the new lessor model with those in ASC 606. The new standard is effective for public entities for fiscal years beginning after December 15, 2018, and lessees and lessors are required to use a modified retrospective transition method for existing leases. The Company is in the process of evaluating the impact of adoption of this ASU on the Company’s consolidated financial statements.

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation, which simplifies various aspects related to how share-based payments are accounted for and presented in the financial statements. The new guidance requires excess tax benefits and tax deficiencies to be recorded in the income statement when the awards vest or are settled. In addition, cash flows related to excess tax benefits will no longer be separately classified as a financing activity apart from other income tax cash flows. The standard also allows us to repurchase more of an employee’s shares for tax withholding purposes without triggering liability accounting, clarifies that all cash payments made on an employee’s behalf for withheld shares should be presented as a financing activity on our cash flows statement, and provides an accounting policy election to account for forfeitures as they occur. The new standard was adopted effective January 1, 2017.

The primary impact of adopting ASU 2016-09 is the recognition of excess tax benefits in our provision for income taxes rather than paid-in capital starting in the first quarter of fiscal year 2017. Additional amendments to the accounting for income taxes and minimum statutory withholding tax requirements had no impact to retained earnings as of the date of adoption. Effective January 1, 2017, we adopted a prospective company-wide policy change due to the change in accounting principle and now record forfeitures as they are incurred on a go-forward basis. As a result of the change in accounting principle, the cumulative-effect adjustment to retained earnings to account for the accounting policy election was immaterial to the financial statements.

The presentation requirements under ASU 2016-09 for cash flows related to excess tax benefits were applied retrospectively to all periods presented and did not result in a material impact to prior period net cash provided by operations and net cash used in financing. The presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any of the periods presented in our consolidated cash flows statements since such cash flows have historically been presented as a financing activity.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flow - Classification of Certain Cash Receipts and Cash Payments, which amends ASC 230 to add or clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. The FASB issued the ASU with the intent of reducing diversity in practice. The new standard is effective for public entities for annual reporting periods beginning after December 15, 2017, including interim periods within those fiscal years. The impact of adopting this standard effective January 1, 2018 will not have a material effect on the Company’s consolidated statement of cash flows.

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flow - Restricted Cash, which amends ASC 230 to require that a statement of cash flows explain the change during the period in total cash, cash equivalents and amounts described as restricted cash. As a result, amounts classified as restricted cash will now be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The new standard is effective for public entities for annual reporting periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The Company adopted the standard effective December 31, 2017. The adoption of this standard did not result in a prior period adjustment for the twelve months ended December 31, 2016 and 2015.

In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment, which eliminates Step 2 from the goodwill impairment test. Under the amended guidance, the Company shall now recognize an impairment charge for the amount by which the carrying value exceeds the reporting unit's fair value. The new standard is effective for public entities for annual reporting periods beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company early adopted the amended guidance effective January 1, 2017 and applied the guidance to the annual impairment test performed in the fourth quarter of 2017.

In March 2017, the FASB issued ASU 2017-07, Improving the Presentation of Net Period Pension Cost and Net Periodic Postretirement Benefit Cost, which amends the requirements in ASC 715 related to the income statement presentation of the components of net periodic benefit cost for an entity’s sponsored defined benefit pension and other postretirement plans. The ASU requires entities to disaggregate the current service cost component from the other components of net benefit cost (the “other components”) and present it with other current compensation costs for related employees in the income statement. The other components shall be presented elsewhere in the income statement and outside of income from operations, if such a subtotal is presented, on a retrospective basis as of the date of adoption. In addition, only the service cost component of net benefit cost is eligible for capitalization on a prospective basis. The ASU is effective for public business entities for annual periods beginning after December 15, 2017. The Company plans to adopt the standard effective January 1, 2018, and will be applied retrospectively for prior periods. The Company estimates approximately $2 million and $1 million of other components of net benefit cost will be re-classed from "Cost of Services" and "Selling, general and administrative," respectively, to a new line below Operating income, "Other components of pension and postretirement benefit plans expense," on the Consolidated Statements of Operations in the first quarter of 2018.

In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation, which amends the scope of modification accounting for share-based payment arrangements. The ASU is effective for public business entities for annual periods beginning after December 15, 2017. The Company plans to prospectively adopt the standard effective January 1, 2018 and will apply the amended guidance to any awards modified on or after this date.

In February 2018, the FASB issued ASU 2018-02 which allows entities to elect to make a one-time reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from newly enacted corporate tax rates. The guidance is effective for public entities for annual reporting periods beginning after December 15, 2018, and for interim periods within those fiscal years. Early adoption is permitted. The Company early adopted the guidance effective December 31, 2017, resulting in a provisional reclassification adjustment of $32.2 million to "Accumulated deficit" from "Other comprehensive loss" on the Consolidated Balance Sheets. The amount of the reclassification is calculated on the basis of the difference between the historical and newly enacted tax rates on deferred taxes related to our pension and postretirement benefit plans.

Other accounting standards that have been issued or proposed by the FASB or other standards-setting bodies that do not require adoption until a future date are not expected to have a material impact on the Company’s consolidated financial statements upon adoption.