Recent Accounting Pronouncements	6 Months Ended
Recent Accounting Pronouncements	Jun. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recently Issued Accounting Standards Measurement Period - Tax Cuts and Jobs Act of 2017 In December 2017, the Securities and Exchange Commission published Staff Accounting Bulletin No. 118 ("SAB 118"), which provides guidance on reporting for accounting impacts of the Tax Cuts and Jobs Act of 2017 (“Tax Act”). SAB 118 allowed the Company to provide reasonable estimates in its 2017 consolidated financial statements for the income tax effects of the Tax Act and to report those effects as provisional amounts in its financial statements through a limited measurement period. Under SAB 118, the measurement period may not extend beyond one year from the enactment of the Tax Act. The Company has not completed the accounting for the tax effects of the enactment of the Tax Act, although it has made reasonable estimates of the effects on existing deferred tax balances and on the one-time transition tax on earnings of certain foreign subsidiaries. Certain aspects of the Tax Act are expected to be clarified, and as such, could impact these estimates. A net provisional tax cost of approximately $700 million was originally recognized in the Company's 2017 consolidated financial statements, and subsequently increased by $52 million in the first quarter of 2018. Lease Accounting In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-02, “Leases (Topic 842),” to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. Most prominent among the amendments is the recognition of assets and liabilities by lessees for those leases classified as operating leases under current U.S. GAAP. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. The Company will adopt the new standard effective January 1, 2019. At transition, the Company will recognize and measure leases using the required modified retrospective approach. The Company anticipates ASU 2016-02 will have a material impact on the consolidated balance sheet due to the significance of the Company’s operating lease portfolio. The Company will elect an optional practical expedient to retain the current classification of leases, and, therefore, anticipates a minimal initial impact on the consolidated statement of income. The impact of ASU 2016-02 is non-cash in nature; therefore, it will not affect the Company’s cash flows. Recently Adopted Accounting Standards Derivatives and Hedging In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities.” ASU 2017-12 expanded components of fair value hedging, specifies the recognition and presentation of the effects of hedging instruments, and eliminates the separate measurement and presentation of hedge ineffectiveness. The Company elected to early adopt the new standard in the first quarter of 2018 and applied the presentation and disclosure guidance on a prospective basis. The adoption of the standard did not have a material impact on the Company's condensed consolidated financial statements. Income Taxes In October 2016, the FASB issued ASU 2016-16, “Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory.” The goal of this update was to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. The Company adopted this standard on January 1, 2018 using a modified retrospective method, resulting in a cumulative catch up adjustment of $57 million, the majority of which was recorded within miscellaneous other assets on the condensed consolidated balance sheet. The adoption of this standard did not have a material impact on the condensed consolidated statements of income and cash flows. Revenue Recognition In May 2014, the FASB issued guidance codified in Accounting Standards Codification ("ASC") 606, "Revenue Recognition - Revenue from Contracts with Customers," which amended the guidance in former ASC 605, "Revenue Recognition." The core principle of the standard is to recognize revenue when control of the promised goods or services is transferred to customers in an amount that reflects the consideration expected to be received for those goods or services. The standard also requires additional disclosures around the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. On January 1, 2018, the Company adopted ASC 606 using the modified retrospective method. Refer to the Revenues footnote below for further details.