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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.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Indebtedness divided by net capital.

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Financing Arrangements - Narrative (Details)							3 Months Ended
Financing Arrangements - Narrative (Details)	Mar. 01, 2019 USD ($)	Feb. 27, 2019 EUR (€)	Feb. 27, 2019 USD ($)	Feb. 26, 2019 USD ($)	Apr. 23, 2018 USD ($)	Sep. 27, 2017 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2019 EUR (€)	Mar. 31, 2019 BRL (R$)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	May 17, 2016 USD ($)
Debt Instrument [Line Items]
Repayments of long-term debt							$ 939,000,000	$ 4,000,000
Letter of Credit Subfacility Maturing 2017
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity										R$ 1,000,000,000	$ 257,000,000	$ 258,000,000
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit outstanding											0	0
Line of Credit \| Foreign Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity									€ 250,000,000		280,000,000	286,000,000
101% notes maturing 2029 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount				$ 700,000,000
Debt instrument, interest rate, stated percentage				4.75%
Debt instrument, redemption price, percentage				101.00%
Term Loan Agreement \| Secured Debt
Debt Instrument [Line Items]
Debt instrument, face amount					$ 1,000,000,000.0
Repayments of long-term debt		€ 600,000,000	$ 673,000,000
Debt instrument, additional term					6 months
Line of credit facility, commitment fee percentage					0.125%
Ratio of indebtedness to net capital					0.65
Debt instrument, covenant, rolling twelve month coverage ratio, minimum					3.0
Term Loan Agreement \| Secured Debt \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					1.125%
Term Loan Agreement \| Secured Debt \| Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					0.125%
Senior note - 2.4% maturing 2019
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.40%
Repayments of long-term debt	$ 250,000,000
Third Amended and Restated Long-Term Credit Agreement \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage						0.125%
Ratio of indebtedness to net capital						0.65
Debt instrument, covenant, rolling twelve month coverage ratio, minimum						3.0
Line of credit facility, maximum borrowing capacity						$ 3,000,000,000.0					$ 3,000,000,000.0			$ 2,500,000,000.0
Third Amended and Restated Long-Term Credit Agreement \| Line of Credit \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.125%
Third Amended and Restated Long-Term Credit Agreement \| Line of Credit \| Prime Rate \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						0.125%
Accounts Receivable
Debt Instrument [Line Items]
Outstanding accounts receivable transferred under arrangements where the Company continues to service the transferred asset												$ 233,000,000	$ 161,000,000