New Accounting Pronouncements (Notes)	12 Months Ended
Dec. 31, 2016
New Accounting Pronouncements [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	New Accounting Pronouncements Standards adopted in 2016 Consolidation On January 1, 2016, we adopted an accounting standards update issued by the Financial Accounting Standards Board (FASB) related to the consolidation analysis, which amended the guidelines for determining whether certain legal entities should be consolidated. This update eliminated the presumption that a general partner should consolidate a limited partnership and modified the evaluation of whether limited partnerships are variable interest entities or voting interest entities. The adoption of this update did not materially impact our consolidated financial statements. Business Combinations On January 1, 2016, we adopted an accounting standards update issued by the FASB which simplifies the accounting for measurement-period adjustments for an acquirer in a business combination. The update requires an acquirer to recognize any adjustments to provisional amounts of the initial accounting for a business combination with a corresponding adjustment to goodwill in the reporting period in which the adjustments are determined in the measurement period, as opposed to revising prior periods presented in financial statements. Thus, an acquirer shall adjust its financial statements as needed, including recognizing in its current-period earnings the full effect of changes in depreciation, amortization, or other income effects, by line item, if any, as a result of the change to the provisional amounts calculated as if the accounting had been completed at the acquisition date. The adoption of this update did not impact our consolidated financial statements. Standards not yet adopted Revenue Recognition In May 2014, the FASB and the International Accounting Standards Board (IASB) issued a comprehensive new revenue recognition standard that will supersede existing revenue recognition guidance under United States Generally Accepted Accounting Principles (U.S. GAAP) and International Financial Reporting Standards (IFRS). The issuance of this guidance completes the joint effort by the FASB and the IASB to improve financial reporting by creating common revenue recognition guidance for U.S. GAAP and IFRS. In August 2015, the FASB issued an accounting standards update for a one-year deferral of the revenue recognition standard's effective date for all entities, which changed the effectiveness to annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The core principle of the new guidance is that a company should recognize revenue to depict the transfer of 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. The standard creates a five step model that requires companies to exercise judgment when considering the terms of a contract and all relevant facts and circumstances. The standard allows for several transition methods: (a) a full retrospective adoption in which the standard is applied to all of the periods presented, or (b) a modified retrospective adoption in which the standard is applied only to the most current period presented in the financial statements, including additional disclosures of the standard’s application impact to individual financial statement line items. We are currently determining the impacts of the new standard on our contract portfolio. Our approach includes performing a detailed review of key contracts representative of our different businesses and comparing historical accounting policies and practices to the new standard. Because the standard will impact our business processes, systems and controls, we are also developing a comprehensive change management project plan to guide the implementation. Our services are primarily short-term in nature, and our assessment at this stage is that we do not expect the new revenue recognition standard will have a material impact on our financial statements upon adoption. We are still evaluating software contracts within our Landmark Software and Services product service line and long-term, fixed pricing contracts requiring integrated project management services within our Consulting and Project Management product service line for potential impact from the new accounting guidance. We currently intend on adopting the new standard utilizing the modified retrospective method that will result in a cumulative effect adjustment as of January 1, 2018. Inventory In July 2015, the FASB issued an accounting standards update to simplify the measurement of inventory, which requires inventory measured using the first in, first out (FIFO) or average cost methods to be subsequently measured at the lower of cost and net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable cost of completion, disposal and transportation. Currently, these inventory methods are required to be subsequently measured at the lower of cost or market. "Market" could be replacement cost, net realizable value, or net realizable value less an approximately normal profit margin. This update will be effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, and will be applied prospectively. We evaluated this new accounting standard and determined it will not have an impact on our consolidated financial statements. Leases In February 2016, the FASB issued an accounting standards update related to accounting for leases, which requires the assets and liabilities that arise from leases to be recognized on the balance sheet. Currently only capital leases are recorded on the balance sheet. This update will require the lessee to recognize a lease liability equal to the present value of the lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term for all leases longer than 12 months. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities and recognize the lease expense for such leases generally on a straight-line basis over the lease term. This update will be effective for fiscal periods beginning after December 15, 2018, including interim periods within that reporting period. Early adoption is permitted. We are currently evaluating the impact that this update will have on our consolidated financial statements. Stock-Based Compensation In March 2016, the FASB issued an accounting standards update to simplify several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and the classification on the statement of cash flows. In addition, an entity can make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest, which is the current U.S. GAAP practice, or account for forfeitures when they occur. This update will be effective for fiscal periods beginning after December 15, 2016, including interim periods within that reporting period. The element of the new standard that will have the most impact on our financial statements will be income tax consequences. Excess tax benefits and tax deficiencies on stock-based compensation awards will now be included in our tax provision within our consolidated statement of operations as discrete items in the reporting period in which they occur, rather than our current accounting of recording in additional paid-in capital on our consolidated balance sheets. We have also elected to continue our current policy of estimating forfeitures of stock-based compensation awards at the time of grant and revising in subsequent periods to reflect actual forfeitures, which is allowable under the new standard. Income Taxes In October 2016, the FASB issued an accounting standards update to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. Under current U.S. GAAP, the recognition of current and deferred income taxes for an intra-entity asset transfer is prohibited until the asset has been sold to an outside party. Under the new standard, an entity will recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Two common examples of assets included in the scope of this update are intellectual property and property, plant and equipment. The amendments in this update are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. The amendments should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. We have elected to early adopt this standard effective January 1, 2017, and upon adoption, approximately $353 million will be recorded directly to retained earnings representing our cumulative-effect adjustment.

New Accounting Pronouncements

Standards adopted in 2016

Consolidation

On January 1, 2016, we adopted an accounting standards update issued by the Financial Accounting Standards Board (FASB) related to the consolidation analysis, which amended the guidelines for determining whether certain legal entities should be consolidated. This update eliminated the presumption that a general partner should consolidate a limited partnership and modified the evaluation of whether limited partnerships are variable interest entities or voting interest entities. The adoption of this update did not materially impact our consolidated financial statements.

Business Combinations

On January 1, 2016, we adopted an accounting standards update issued by the FASB which simplifies the accounting for measurement-period adjustments for an acquirer in a business combination. The update requires an acquirer to recognize any adjustments to provisional amounts of the initial accounting for a business combination with a corresponding adjustment to goodwill in the reporting period in which the adjustments are determined in the measurement period, as opposed to revising prior periods presented in financial statements. Thus, an acquirer shall adjust its financial statements as needed, including recognizing in its current-period earnings the full effect of changes in depreciation, amortization, or other income effects, by line item, if any, as a result of the change to the provisional amounts calculated as if the accounting had been completed at the acquisition date. The adoption of this update did not impact our consolidated financial statements.

Standards not yet adopted

Revenue Recognition

In May 2014, the FASB and the International Accounting Standards Board (IASB) issued a comprehensive new revenue recognition standard that will supersede existing revenue recognition guidance under United States Generally Accepted Accounting Principles (U.S. GAAP) and International Financial Reporting Standards (IFRS). The issuance of this guidance completes the joint effort by the FASB and the IASB to improve financial reporting by creating common revenue recognition guidance for U.S. GAAP and IFRS. In August 2015, the FASB issued an accounting standards update for a one-year deferral of the revenue recognition standard's effective date for all entities, which changed the effectiveness to annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period.

The core principle of the new guidance is that a company should recognize revenue to depict the transfer of 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. The standard creates a five step model that requires companies to exercise judgment when considering the terms of a contract and all relevant facts and circumstances. The standard allows for several transition methods: (a) a full retrospective adoption in which the standard is applied to all of the periods presented, or (b) a modified retrospective adoption in which the standard is applied only to the most current period presented in the financial statements, including additional disclosures of the standard’s application impact to individual financial statement line items.

We are currently determining the impacts of the new standard on our contract portfolio. Our approach includes performing a detailed review of key contracts representative of our different businesses and comparing historical accounting policies and practices to the new standard. Because the standard will impact our business processes, systems and controls, we are also developing a comprehensive change management project plan to guide the implementation. Our services are primarily short-term in nature, and our assessment at this stage is that we do not expect the new revenue recognition standard will have a material impact on our financial statements upon adoption. We are still evaluating software contracts within our Landmark Software and Services product service line and long-term, fixed pricing contracts requiring integrated project management services within our Consulting and Project Management product service line for potential impact from the new accounting guidance. We currently intend on adopting the new standard utilizing the modified retrospective method that will result in a cumulative effect adjustment as of January 1, 2018.

Inventory

In July 2015, the FASB issued an accounting standards update to simplify the measurement of inventory, which requires inventory measured using the first in, first out (FIFO) or average cost methods to be subsequently measured at the lower of cost and net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable cost of completion, disposal and transportation. Currently, these inventory methods are required to be subsequently measured at the lower of cost or market. "Market" could be replacement cost, net realizable value, or net realizable value less an approximately normal profit margin. This update will be effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, and will be applied prospectively. We evaluated this new accounting standard and determined it will not have an impact on our consolidated financial statements.

Leases

In February 2016, the FASB issued an accounting standards update related to accounting for leases, which requires the assets and liabilities that arise from leases to be recognized on the balance sheet. Currently only capital leases are recorded on the balance sheet. This update will require the lessee to recognize a lease liability equal to the present value of the lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term for all leases longer than 12 months. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities and recognize the lease expense for such leases generally on a straight-line basis over the lease term. This update will be effective for fiscal periods beginning after December 15, 2018, including interim periods within that reporting period. Early adoption is permitted. We are currently evaluating the impact that this update will have on our consolidated financial statements.

Stock-Based Compensation

In March 2016, the FASB issued an accounting standards update to simplify several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and the classification on the statement of cash flows. In addition, an entity can make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest, which is the current U.S. GAAP practice, or account for forfeitures when they occur. This update will be effective for fiscal periods beginning after December 15, 2016, including interim periods within that reporting period. The element of the new standard that will have the most impact on our financial statements will be income tax consequences. Excess tax benefits and tax deficiencies on stock-based compensation awards will now be included in our tax provision within our consolidated statement of operations as discrete items in the reporting period in which they occur, rather than our current accounting of recording in additional paid-in capital on our consolidated balance sheets. We have also elected to continue our current policy of estimating forfeitures of stock-based compensation awards at the time of grant and revising in subsequent periods to reflect actual forfeitures, which is allowable under the new standard.

Income Taxes

In October 2016, the FASB issued an accounting standards update to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. Under current U.S. GAAP, the recognition of current and deferred income taxes for an intra-entity asset transfer is prohibited until the asset has been sold to an outside party. Under the new standard, an entity will recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Two common examples of assets included in the scope of this update are intellectual property and property, plant and equipment. The amendments in this update are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. The amendments should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. We have elected to early adopt this standard effective January 1, 2017, and upon adoption, approximately $353 million will be recorded directly to retained earnings representing our cumulative-effect adjustment.