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

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 835
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-Section 45
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- Definition

Fair value amount of debt instrument that was repurchased.

+ 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

The redemption (or callable) amount of currently redeemable preferred stock. Includes amounts representing dividends not currently declared or paid but which will be payable under the redemption features or for which ultimate payment is solely within the control of the issuer.

+ 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 210.5-02.27(b))
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-Name Accounting Standards Codification
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- Definition

The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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Subsequent Events (Details)	1 Months Ended	3 Months Ended
Subsequent Events (Details)	Mar. 31, 2018 USD ($)	Jul. 01, 2018 USD ($)	Apr. 01, 2018 USD ($)	Apr. 02, 2017 USD ($)	Apr. 05, 2018 EUR (€)	Apr. 05, 2018 USD ($)	Apr. 01, 2018 EUR (€)	Apr. 01, 2018 USD ($)	Mar. 31, 2018 EUR (€)	Mar. 31, 2018 USD ($)	Mar. 27, 2018 $ / shares
Subsequent Event [Line Items]
Redemption price per share (in dollars per share) \| $ / shares											$ 0.01
Redemption amount								$ 400,000
Loss on debt extinguishment			$ 19,960,000	$ 0
5.50% Senior subordinated notes due 2023 \| Senior Subordinated Notes
Subsequent Event [Line Items]
Debt repurchased \| €									€ 143,100,000
Aggregate principal amount outstanding of senior subordinated notes \| €							€ 200,000,000.0
Loss on debt extinguishment	$ (6,200,000)
5.50% Senior subordinated notes due 2023 \| Senior Subordinated Notes \| Subsequent Event
Subsequent Event [Line Items]
Debt repurchased \| €					€ 56,900,000
5.25% Senior subordinated notes due 2024 \| Senior Subordinated Notes
Subsequent Event [Line Items]
Debt repurchased										$ 188,700,000
Aggregate principal amount outstanding of senior subordinated notes								$ 200,000,000.0
Loss on debt extinguishment	$ (13,800,000)
5.25% Senior subordinated notes due 2024 \| Senior Subordinated Notes \| Subsequent Event
Subsequent Event [Line Items]
Debt repurchased						$ 11,300,000
Scenario, Forecast \| Senior Subordinated Notes
Subsequent Event [Line Items]
Loss on debt extinguishment		$ 3,000,000