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Basis of Presentation and Significant Accounting Policies and Practices - Additional Information (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |
Advertising expense | $ 30 | $ 34 | $ 39 |
Antidilutive securities excluded from computation of earnings per share, Amount (in shares) | 6 | 4 | 6 |
Maximum length to maturity of a security, from the investment date, where it is classified as cash and cash equivalent | 90 days |  |  |
Length to maturity from the investment date of a security where the length of time is too short to be classified as a short-term investment | 90 days |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Lease liability | $ 332 |  |  |
Lease assets | $ 337 |  |  |
ASU 2016-02 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Lease liability |  |  |  | $ 229
Lease assets |  |  |  | $ 229

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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