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Debt - Narrative (Details) | Sep. 30, 2019 USD ($) credit_facility | Sep. 30, 2019 EUR (€) credit_facility | May 02, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 03, 2018 USD ($) | Mar. 08, 2018 USD ($) | Mar. 08, 2018 CAD ($)
--- | --- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |  |
Short-term debt and current portion of long-term debt | $ 1,148,000,000 |  |  | $ 251,000,000 |  |  |
Number of credit facilities | credit_facility | 2 | 2 |  |  |  |  |
5.00% Senior Notes Due September 2020 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt face value | $ 600,000,000 |  |  |  |  |  |
Debt interest rate percentage (as a percent) | 5.00% | 5.00% |  |  |  |  |
3.75% Senior Notes Due May 2, 2029 | Senior Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt face value |  |  | $ 750,000,000 |  |  |  |
Debt interest rate percentage (as a percent) | 3.75% | 3.75% | 3.75% |  |  |  |
4.500% Senior Notes Due December 2028 | Senior Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt face value |  |  |  |  | $ 350,000,000 |  |
Debt interest rate percentage (as a percent) | 4.50% | 4.50% |  |  | 4.50% |  |
4.76% Senior Notes Due March 2018 | Senior Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt interest rate percentage (as a percent) |  |  |  |  |  | 4.76% | 4.76%
Short-term debt and current portion of long-term debt |  |  |  |  |  | $ 291,000,000 | $ 375,000,000
Foreign Line of Credit | 2020 Facility | Line of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 900,000,000 |  |  |  |  |  |
Credit Facility Expiring October 2022 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |  |
Credit Facility Expiring October 2022 | Line of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 400,000,000 |  |  |  |  |  |
Commercial paper | Commercial Paper Programs |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of credit facility, current borrowing capacity | 1,300,000,000 |  |  |  |  |  |
United States | Commercial paper | Commercial Paper Programs |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 600,000,000 |  |  |  |  |  |
Europe | Commercial paper | Commercial Paper Programs |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | € |  | € 525,000,000 |  |  |  |  |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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