Description of Business and Basis of Presentation (Policies)	9 Months Ended
Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
New Accounting Pronouncements	Accounting Pronouncements Adopted on January 1, 2018 We adopted Accounting Standard Update (ASU) 2014-09, Revenue from Contracts with Customers (ASC 606), which requires companies to recognize revenue when or as control of a promised good or service is transferred to a client in amounts that reflect consideration the company expects to receive in exchange for those goods and services. See Note 2 for more information on the adoption of ASC 606. We adopted ASU No. 2016-16, Income Taxes: Intra-entity Transfers of Assets other than Inventory, which requires tax expense to be recognized from the sale of intra-entity assets, other than inventory, when the transfer occurs, even though the effects of the transaction are eliminated in consolidation. Under prior guidance, the tax effects of transfers were deferred until the transferred asset was sold or otherwise recovered through use. We recognized the cumulative effect of initially applying this standard as a net reduction of $3 million to opening retained earnings. We adopted ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Benefit Cost. The ASU requires that the service cost component of net periodic benefit cost be presented in the same income statement line item as other employee compensation costs, while other components of net periodic benefit cost be presented in a separate line item in the Consolidated Statements of Income. Prior period information has been recast to conform to the current period presentation. We adopted ASU 2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities. This standard primarily affects the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. There was no impact on our consolidated financial statements. We early adopted ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The ASU changes the recognition and presentation requirements as well as the cost and complexity of applying hedge accounting by easing the requirements for effectiveness testing and hedge documentation. There was no impact on our consolidated financial statements. We adopted ASU 2017-09, Scope of Modification Accounting. The ASU provides guidance about which changes to terms and conditions of a share-based payment award require an entity to apply modification accounting. There was no impact on our consolidated financial statements. We adopted ASU 2017-01, Clarifying the Definition of a Business, which clarifies the definition of a business with the objective of adding guidance to assist entities in evaluating whether transactions should be accounted for as an acquisition or disposal of assets or a business. There was no impact on our consolidated financial statements. New Accounting Pronouncements - Not Yet Adopted In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other-Internal-Use Software. The ASU aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The standard is effective beginning January 1, 2020, with early adoption permitted. We are currently assessing the impact this standard will have on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans. The ASU impacts disclosure requirements only. The standard is effective beginning January 1, 2021, with early adoption permitted. We are currently assessing the impact this standard will have on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820). The ASU modifies certain disclosure requirements of fair value measurements. The standard is effective beginning January 1, 2020, with early adoption permitted. We are currently assessing the impact this standard will have on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (AOCI). The ASU permits a reclassification of the disproportionate income tax effects of the 2017 Tax Cuts and Jobs Act (the Act) on items within AOCI to retained earnings and requires certain new disclosures. The standard is effective beginning January 1, 2019, with early adoption permitted. We anticipate that the reclassification of the disproportionate income tax effects of the Act from AOCI to retained earnings could be material; however there will be no impact to total Stockholder's equity. In March 2017, the FASB issued ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. The ASU requires that the premium of certain callable debt securities be amortized to the earliest call date rather than the scheduled maturity date. The standard is effective beginning January 1, 2019 and will be applied on a modified retrospective basis with a cumulative effect adjustment as of the beginning of the period of adoption. Early adoption is permitted. We currently do not believe the adoption of this standard will have a material impact on our consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses. The ASU sets forth a “current expected credit loss” (CECL) model, which requires companies to measure expected credit losses for all financial instruments held at the reporting date based on historical experience, current conditions and reasonably supportable forecasts. This replaces the existing incurred loss model and is applicable to the measurement of credit losses on financial assets measured at amortized cost and applies to some off-balance sheet credit exposures. This standard is effective beginning January 1, 2020. We are currently assessing the impact this standard will have on our consolidated financial statements and disclosures. In February 2016, the FASB issued ASU 2016-02, Leases. This standard, among other things, requires lessees to recognize almost all leases on their balance sheet as a right-of-use asset and a lease liability. Additionally, the standard requires enhanced qualitative and quantitative disclosures to help readers assess the amount, timing and uncertainty of cash flows arising from leases. From a lessor perspective, the standard simplifies the accounting for lease modifications and aligns accounting of lease contracts with the new revenue recognition guidance. This standard is effective beginning January 1, 2019. We will adopt the standard using a modified retrospective approach and recognize and measure leases in the period of adoption. We plan to utilize a package of optional practical expedients that allows companies to maintain prior accounting conclusions regarding whether a contract contains a lease, lease classification and initial direct costs for any expired or existing leases. Prior periods will not be restated. With regard to our lessor portfolio, we expect changes in the timing and classification of revenue and associated costs related to contract modifications, as well as conclusions on lease and non-lease components. We are still determining the impact of these changes on our consolidated financial statements; however, the changes could materially impact the timing of revenue and expense recognition over the lease term. We do not expect the economics and overall profitability of our lease offerings to be materially impacted. From the lessee perspective, we are reviewing our lease portfolio to evaluate the impact on our consolidated financial statements, accounting policies and internal controls; however, we expect that recognizing a right-of-use asset and liability will materially impact our balance sheet. We are implementing a new lease accounting software solution that will determine the right-of-use asset and lease liability related to our operating lease portfolio as well as meet the disclosure requirements.

Accounting Pronouncements Adopted on January 1, 2018

We adopted Accounting Standard Update (ASU) 2014-09, Revenue from Contracts with Customers (ASC 606), which requires companies to recognize revenue when or as control of a promised good or service is transferred to a client in amounts that reflect consideration the company expects to receive in exchange for those goods and services. See Note 2 for more information on the adoption of ASC 606.

We adopted ASU No. 2016-16, Income Taxes: Intra-entity Transfers of Assets other than Inventory, which requires tax expense to be recognized from the sale of intra-entity assets, other than inventory, when the transfer occurs, even though the effects of the transaction are eliminated in consolidation. Under prior guidance, the tax effects of transfers were deferred until the transferred asset was sold or otherwise recovered through use. We recognized the cumulative effect of initially applying this standard as a net reduction of $3 million to opening retained earnings.

We adopted ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Benefit Cost. The ASU requires that the service cost component of net periodic benefit cost be presented in the same income statement line item as other employee compensation costs, while other components of net periodic benefit cost be presented in a separate line item in the Consolidated Statements of Income. Prior period information has been recast to conform to the current period presentation.

We adopted ASU 2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities. This standard primarily affects the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. There was no impact on our consolidated financial statements.

We early adopted ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The ASU changes the recognition and presentation requirements as well as the cost and complexity of applying hedge accounting by easing the requirements for effectiveness testing and hedge documentation. There was no impact on our consolidated financial statements.

We adopted ASU 2017-09, Scope of Modification Accounting. The ASU provides guidance about which changes to terms and conditions of a share-based payment award require an entity to apply modification accounting. There was no impact on our consolidated financial statements.

We adopted ASU 2017-01, Clarifying the Definition of a Business, which clarifies the definition of a business with the objective of adding guidance to assist entities in evaluating whether transactions should be accounted for as an acquisition or disposal of assets or a business. There was no impact on our consolidated financial statements.

New Accounting Pronouncements - Not Yet Adopted

In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other-Internal-Use Software. The ASU aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The standard is effective beginning January 1, 2020, with early adoption permitted. We are currently assessing the impact this standard will have on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans. The ASU impacts disclosure requirements only. The standard is effective beginning January 1, 2021, with early adoption permitted. We are currently assessing the impact this standard will have on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820). The ASU modifies certain disclosure requirements of fair value measurements. The standard is effective beginning January 1, 2020, with early adoption permitted. We are currently assessing the impact this standard will have on our consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (AOCI). The ASU permits a reclassification of the disproportionate income tax effects of the 2017 Tax Cuts and Jobs Act (the Act) on items within AOCI to retained earnings and requires certain new disclosures. The standard is effective beginning January 1, 2019, with early adoption permitted. We anticipate that the reclassification of the disproportionate income tax effects of the Act from AOCI to retained earnings could be material; however there will be no impact to total Stockholder's equity.

In March 2017, the FASB issued ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. The ASU requires that the premium of certain callable debt securities be amortized to the earliest call date rather than the scheduled maturity date. The standard is effective beginning January 1, 2019 and will be applied on a modified retrospective basis with a cumulative effect adjustment as of the beginning of the period of adoption. Early adoption is permitted. We currently do not believe the adoption of this standard will have a material impact on our consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses. The ASU sets forth a “current expected credit loss” (CECL) model, which requires companies to measure expected credit losses for all financial instruments held at the reporting date based on historical experience, current conditions and reasonably supportable forecasts. This replaces the existing incurred loss model and is applicable to the measurement of credit losses on financial assets measured at amortized cost and applies to some off-balance sheet credit exposures. This standard is effective beginning January 1, 2020. We are currently assessing the impact this standard will have on our consolidated financial statements and disclosures.

In February 2016, the FASB issued ASU 2016-02, Leases. This standard, among other things, requires lessees to recognize almost all leases on their balance sheet as a right-of-use asset and a lease liability. Additionally, the standard requires enhanced qualitative and quantitative disclosures to help readers assess the amount, timing and uncertainty of cash flows arising from leases. From a lessor perspective, the standard simplifies the accounting for lease modifications and aligns accounting of lease contracts with the new revenue recognition guidance. This standard is effective beginning January 1, 2019. We will adopt the standard using a modified retrospective approach and recognize and measure leases in the period of adoption. We plan to utilize a package of optional practical expedients that allows companies to maintain prior accounting conclusions regarding whether a contract contains a lease, lease classification and initial direct costs for any expired or existing leases. Prior periods will not be restated.

With regard to our lessor portfolio, we expect changes in the timing and classification of revenue and associated costs related to contract modifications, as well as conclusions on lease and non-lease components. We are still determining the impact of these changes on our consolidated financial statements; however, the changes could materially impact the timing of revenue and expense recognition over the lease term. We do not expect the economics and overall profitability of our lease offerings to be materially impacted.

From the lessee perspective, we are reviewing our lease portfolio to evaluate the impact on our consolidated financial statements, accounting policies and internal controls; however, we expect that recognizing a right-of-use asset and liability will materially impact our balance sheet. We are implementing a new lease accounting software solution that will determine the right-of-use asset and lease liability related to our operating lease portfolio as well as meet the disclosure requirements.