Identification of the lender and information about a contractual promise to repay a short-term or long-term obligation, which includes borrowings under lines of credit, notes payable, commercial paper, bonds payable, debentures, and other contractual obligations for payment. This may include rationale for entering into the arrangement, significant terms of the arrangement, which may include amount, repayment terms, priority, collateral required, debt covenants, borrowing capacity, call features, participation rights, conversion provisions, sinking-fund requirements, voting rights, basis for conversion if convertible and remarketing provisions. The description may be provided for individual debt instruments, rational groupings of debt instruments, or by debt in total.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Indebtedness - Debt Repayment and Related Extinguishment (Details)			3 Months Ended		6 Months Ended	12 Months Ended
	Dec. 12, 2017	Sep. 26, 2016 USD ($)	Mar. 31, 2018 USD ($)	Jul. 01, 2017 USD ($)	Jul. 01, 2017	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2018 EUR (€)	Dec. 31, 2018 USD ($)	Mar. 08, 2018 EUR (€)	Mar. 07, 2016 USD ($)	Dec. 02, 2014 USD ($)	Nov. 08, 2013 USD ($)
Debt Instrument [Line Items]
Extinguishment of debt		$ 500,000,000.0					$ 2,600,000,000
Loss on extinguishment of debt			$ 500,000	$ 135,200,000		$ 500,000	$ 135,200,000	$ 1,100,000
2014 Euro-Denominated Term Loan due December 5, 2019
Debt Instrument [Line Items]
Debt instrument, face amount \| €											€ 350,000,000.0
Debt instrument, description						2014 Term loan due December 5, 2019
2.30% Unsecured Senior notes November 8, 2018
Debt Instrument [Line Items]
Debt instrument, face amount														$ 600,000,000.0
Interest rate, stated percentage														2.30%
3.5% Senior note due 2021
Debt Instrument [Line Items]
Debt instrument, face amount													$ 500,000,000.0
Interest rate, stated percentage									3.50%	3.50%			3.50%
Debt instrument, description					$500.0 3.500% senior notes due 2021	December 15, 2021
3.500% Unsecured Senior notes due March 15, 2021
Debt Instrument [Line Items]
Debt instrument, face amount												$ 500,000,000.0
Interest rate, stated percentage									3.50%	3.50%		3.50%
Debt instrument, description						March 15, 2021
4.00% Unsecured Senior Notes due November 15, 2023
Debt Instrument [Line Items]
Debt instrument, face amount														$ 800,000,000.0
Interest rate, stated percentage									4.00%	4.00%				4.00%
Debt instrument, description						November 15, 2023
5.30% Unsecured Senior Notes due November 15, 2043
Debt Instrument [Line Items]
Debt instrument, face amount														$ 400,000,000.0
Interest rate, stated percentage									5.30%	5.30%				5.30%
Debt instrument, description					$400.0 5.300% senior notes due 2043	November 15, 2043
4.9% Senior Loan due 2044
Debt Instrument [Line Items]
Debt instrument, face amount													$ 400,000,000.0
Interest rate, stated percentage									4.90%	4.90%			4.90%
Debt instrument, description					$400.0 4.900% senior notes due 2044	December 15, 2044
5.125% Senior note due 2017
Debt Instrument [Line Items]
Debt instrument, description	2014 term loan due December 5, 2019
Senior Notes [Member] \| Senior Notes due 2018 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount										$ 600,000,000
Interest rate, stated percentage									2.30%	2.30%
Senior Notes [Member] \| Senior Note 1 due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount										$ 500,000,000
Interest rate, stated percentage									3.50%	3.50%
Senior Notes [Member] \| Senior Note 2 due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount										$ 500,000,000
Interest rate, stated percentage									3.50%	3.50%
Senior Notes [Member] \| Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount										$ 800,000,000
Interest rate, stated percentage									4.00%	4.00%
Senior Notes [Member] \| Senior Notes due 2043 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount										$ 400,000,000
Interest rate, stated percentage									5.30%	5.30%
Senior Notes [Member] \| Senior Notes due 2044 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount										$ 400,000,000
Interest rate, stated percentage									4.90%	4.90%
Senior Notes [Member] \| Senior Notes due 2017 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount \| €									€ 300,000,000
Interest rate, stated percentage									5.125%	5.125%
Bonds [Member] \| Retail Bonds due 2017 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount \| €									€ 180,000,000
Interest rate, stated percentage									4.50%	4.50%