Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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://www.xbrl.org/2003/role/presentationRef
-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=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-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

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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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.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- Details

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Debt and Other Financing Arrangements - Senior Notes (Details)	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2018 EUR (€)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Line of credit facility letters of credit outstanding	$ 5,413,000,000		$ 1,361,000,000
Unamortized debt issuance costs	$ 90,000,000		13,000,000
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	100.00%
Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	100.00%
Senior Notes \| 5 3/8% Senior Notes due 2024
Debt Instrument [Line Items]
Line of credit facility letters of credit outstanding	$ 222,000,000		222,000,000
Principal	$ 225,000,000	€ 225,000,000	225,000,000
Stated rate	5.375%	5.375%
Senior Notes \| 5.000% Senior Notes due 2026
Debt Instrument [Line Items]
Line of credit facility letters of credit outstanding	$ 493,000,000		492,000,000
Principal	$ 500,000,000	€ 500,000,000	500,000,000
Stated rate	5.00%	5.00%
Senior Notes \| 5.000% Euro Fixed Rate Notes due 2024
Debt Instrument [Line Items]
Line of credit facility letters of credit outstanding	$ 427,000,000		0
Principal	$ 401,000,000	€ 350,000,000	0
Stated rate	5.00%	5.00%
Senior Notes \| 4.875% Euro Fixed Rate Notes due 2022
Debt Instrument [Line Items]
Line of credit facility letters of credit outstanding	$ 496,000,000		0
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	100.00%
Principal	$ 476,000,000	€ 415,000,000	0
Stated rate	4.875%	4.875%
Senior Notes \| Euro Floating Rate Notes due 2024
Debt Instrument [Line Items]
Line of credit facility letters of credit outstanding	$ 349,000,000		0
Principal	$ 344,000,000	€ 300,000,000	$ 0
Stated rate	4.875%	4.875%
Variable rate	0.00%
Debt Instrument, Redemption, Period One [Member] \| Senior Notes \| 5.000% Euro Fixed Rate Notes due 2024
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	40.00%
Stated rate	5.00%	5.00%
Debt Instrument, Redemption, Period One [Member] \| Senior Notes \| 4.875% Euro Fixed Rate Notes due 2022
Debt Instrument [Line Items]
Stated rate	4.875%	4.875%
Debt Instrument, Redemption, Period One [Member] \| Revolving Credit Facility \| 5 3/8% Senior Notes due 2024
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	35.00%
Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	101.00%
Debt Instrument, Redemption, Period Two [Member] \| Senior Notes \| 5 3/8% Senior Notes due 2024
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	105.00%
Debt Instrument, Redemption, Period Two [Member] \| Senior Notes \| 5.000% Euro Fixed Rate Notes due 2024
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	105.00%
Stated rate	5.00%	5.00%
Debt Instrument, Redemption, Period Three [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	100.00%
Debt Instrument, Redemption, Period Three [Member] \| Senior Notes \| 4.875% Euro Fixed Rate Notes due 2022
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	104.875%
Stated rate	4.875%	4.875%
Debt Instrument, Redemption, Period Four [Member] \| Senior Notes
Debt Instrument [Line Items]
Stated rate	101.00%	101.00%
LIBOR \| Senior Notes \| Euro Floating Rate Notes due 2024
Debt Instrument [Line Items]
Variable rate	4.875%