Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2016
Accounting Policies [Abstract]
Reclassification	Reclassification. Certain prior year amounts have been reclassified to conform to the 2016 presentation in the condensed consolidated financial statements.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements. In February 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2015-02 (“ASU 2015-02”) “Consolidation (Topic 810) — Amendments to the Consolidations Analysis,” which modifies certain aspects of both the variable interest entities and voting interest entities models. We adopted ASU 2015-02 on January 1, 2016. The adoption of the new standard did not have an impact on our financial position or our results of operations. In April 2015, the FASB issued Accounting Standards Update 2015‑03 (“ASU 2015‑03”) “Interest - Imputation of Interest (Subtopic 835‑30) - Simplifying the Presentation of Debt Issuance Costs,” that requires that all costs incurred to issue debt be presented in the balance sheet as a direct deduction from the carrying value of the debt. In August 2015, the FASB issued ASU 2015-15 to clarify that debt issuance costs related to line‑of‑credit arrangements may remain classified as an asset. We retrospectively adopted both ASU 2015‑03 and ASU 2015‑15 on January 1, 2016. As a result of the retrospective adoption of the standards, we reclassified $15 million of debt issuance costs from Other assets to Long-term debt, and $1 million of debt issuance costs from Other assets to Notes payable, as of December 31, 2015. In May 2014, the FASB issued a new standard for revenue recognition, Accounting Standards Codification 606 (“ASC 606”). The purpose of ASC 606 is to provide a single, comprehensive revenue recognition model for all contracts with customers to improve comparability across industries. ASC 606 is effective for us for annual periods beginning January 1, 2018. We are currently evaluating the impact the adoption of this new standard will have on our results of operations. In January 2016, the FASB issued Accounting Standards Update 2016-01 (“ASU 2016-01”), “Financial Instruments-Overall: Recognition and Measurement of Financial Assets and Financial Liabilities,” which primarily affects the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. ASU 2016-01 is effective for us for annual periods beginning January 1, 2018. We are currently evaluating the impact the adoption of this new standard will have on our financial position and results of operations. In February 2016, the FASB issued a new standard for leases, Accounting Standards Codification 842 (“ASC 842”), which changes the accounting model for identifying and accounting for leases. ASC 842 is effective for us for annual periods beginning January 1, 2019. We are currently evaluating the impact the adoption of this new standard will have on our financial position and results of operations. In March 2016, the FASB issued Accounting Standards Update 2016-09 (“ASU 2016-09”), “Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting,” which requires the tax effects related to share-based payments to be recorded through the income statement and simplifies the accounting requirements for forfeitures and employers' tax withholding requirements. ASU 2016-09 is effective for us for annual periods beginning January 1, 2017. We anticipate the impact of the adoption of this ASU to be limited to the reclassification of certain items within our statement of cash flows, which we intend to adopt retrospectively. A. ACCOUNTING POLICIES (Concluded) In August 2016, the FASB issued Accounting Standards Update 2016-15 (“ASU 2016-15”), “Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments,” which is intended to reduce diversity in practice as to how certain transactions are classified in the statement of cash flows. ASC 2016-15 is effective for us for annual periods beginning January 1, 2018. We are currently evaluating the impact the adoption of this new standard will have on our statement of cash flows.

Recently Issued Accounting Pronouncements. In February 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2015-02 (“ASU 2015-02”) “Consolidation (Topic 810) — Amendments to the Consolidations Analysis,” which modifies certain aspects of both the variable interest entities and voting interest entities models. We adopted ASU 2015-02 on January 1, 2016. The adoption of the new standard did not have an impact on our financial position or our results of operations.

In April 2015, the FASB issued Accounting Standards Update 2015‑03 (“ASU 2015‑03”) “Interest - Imputation of Interest (Subtopic 835‑30) - Simplifying the Presentation of Debt Issuance Costs,” that requires that all costs incurred to issue debt be presented in the balance sheet as a direct deduction from the carrying value of the debt. In August 2015, the FASB issued ASU 2015-15 to clarify that debt issuance costs related to line‑of‑credit arrangements may remain classified as an asset. We retrospectively adopted both ASU 2015‑03 and ASU 2015‑15 on January 1, 2016. As a result of the retrospective adoption of the standards, we reclassified $15 million of debt issuance costs from Other assets to Long-term debt, and $1 million of debt issuance costs from Other assets to Notes payable, as of December 31, 2015.

In May 2014, the FASB issued a new standard for revenue recognition, Accounting Standards Codification 606 (“ASC 606”). The purpose of ASC 606 is to provide a single, comprehensive revenue recognition model for all contracts with customers to improve comparability across industries. ASC 606 is effective for us for annual periods beginning January 1, 2018. We are currently evaluating the impact the adoption of this new standard will have on our results of operations.

In January 2016, the FASB issued Accounting Standards Update 2016-01 (“ASU 2016-01”), “Financial Instruments-Overall: Recognition and Measurement of Financial Assets and Financial Liabilities,” which primarily affects the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. ASU 2016-01 is effective for us for annual periods beginning January 1, 2018. We are currently evaluating the impact the adoption of this new standard will have on our financial position and results of operations.

In February 2016, the FASB issued a new standard for leases, Accounting Standards Codification 842 (“ASC 842”), which changes the accounting model for identifying and accounting for leases. ASC 842 is effective for us for annual periods beginning January 1, 2019. We are currently evaluating the impact the adoption of this new standard will have on our financial position and results of operations.

In March 2016, the FASB issued Accounting Standards Update 2016-09 (“ASU 2016-09”), “Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting,” which requires the tax effects related to share-based payments to be recorded through the income statement and simplifies the accounting requirements for forfeitures and employers' tax withholding requirements. ASU 2016-09 is effective for us for annual periods beginning January 1, 2017. We anticipate the impact of the adoption of this ASU to be limited to the reclassification of certain items within our statement of cash flows, which we intend to adopt retrospectively.

A. ACCOUNTING POLICIES (Concluded)

In August 2016, the FASB issued Accounting Standards Update 2016-15 (“ASU 2016-15”), “Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments,” which is intended to reduce diversity in practice as to how certain transactions are classified in the statement of cash flows. ASC 2016-15 is effective for us for annual periods beginning January 1, 2018. We are currently evaluating the impact the adoption of this new standard will have on our statement of cash flows.