Convertible debt shares per $1,000 principal amount

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- Definition

Debt Instrument Conversion Circumstance, Number of Trading Days

+ References

No definition available.

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- Definition

Principal Amount Per Note Used in Conversion Rate

+ References

No definition available.

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- Definition

Ratio of Common Stock Closing Price to Debt Conversion Price, Percentage

+ References

No definition available.

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- Definition

Carrying amount of long-term convertible debt as of the balance sheet date, net of the amount due in the next twelve months or greater than the normal operating cycle, if longer. The debt is convertible into another form of financial instrument, typically the entity's common stock.

+ References

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- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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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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No definition available.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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- Definition

The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Credit Facilities and Debt Credit and Debt Facilities - 1% Convertible Debentures due 2035 (Details) - USD ($)	1 Months Ended	3 Months Ended			9 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2017	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2017	Sep. 30, 2020	Sep. 30, 2019	Nov. 01, 2017	Mar. 13, 2017	Dec. 07, 2015	Oct. 24, 2011
Debt Instrument [Line Items]
Long-term debt, face value						$ 1,666,500,000	$ 2,137,000,000.0
Convertible Debentures One Percent Due Twenty Thirty Five [Member]
Debt Instrument [Line Items]
Long-term debt, face value										$ 676,500,000
Convertible debentures, interest rate						1.00%	1.00%			1.00%
Proceeds from long-term debt, net of issuance costs							$ 663,800,000
Convertible Debt, Noncurrent										$ 495,400,000
Debt Instrument, Convertible, Carrying Amount of Equity Component										$ 181,100,000
Debt Instrument, Convertible, Conversion Price										$ 24.12
Convertible Debentures One Percent Due Twenty Thirty Five [Member] \| Minimum
Debt Instrument [Line Items]
Ratio of Common Stock Closing Price to Debt Conversion Price, Percentage										130.00%
Debt Instrument Conversion Circumstance Number Of Trading Days							20 days
Convertible Debentures One Percent Due Twenty Thirty Five [Member] \| Maximum
Debt Instrument [Line Items]
Ratio of Common Stock Closing Price to Debt Conversion Price, Percentage										98.00%
Debt Instrument Conversion Circumstance Number Of Trading Days							30 days
Principal Amount Per Note Used In Conversion Rate										$ 1,000
2.75% Convertible Debentures due November 1, 2031
Debt Instrument [Line Items]
Long-term debt, face value								$ 46,600,000		$ 395,500,000	$ 690,000,000.0
Convertible debentures, interest rate				2.75%		2.75%	2.75%				2.75%
Repayments of Convertible Debt		$ 331,200,000	$ 256,200,000	$ 38,300,000		$ 17,800,000	$ 38,300,000
Repayments of Debt	$ 46,600,000
Convertible Debt, Noncurrent											$ 533,600,000
Debt Instrument, Convertible, Carrying Amount of Equity Component											$ 156,400,000
Principal Amount Per Note Used In Conversion Rate							$ 1,000
Convertible Debentures 1.25% Due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, face value									$ 350,000,000.0
Convertible debentures, interest rate						1.25%	1.25%		1.25%
Proceeds from long-term debt, net of issuance costs					$ 343,600,000
Convertible Debt, Noncurrent									$ 252,100,000
Debt Instrument, Convertible, Carrying Amount of Equity Component									$ 97,900,000
Debt Instrument, Convertible, Conversion Price									$ 19.69
Ratio of Common Stock Closing Price to Debt Conversion Price, Percentage							130.00%
Convertible Debentures 1.25% Due 2025 [Member] \| Minimum
Debt Instrument [Line Items]
Debt Instrument Conversion Circumstance Number Of Trading Days						20 days
Term Loan Facility Due August Seventh Twenty Ninteen [Member]
Debt Instrument [Line Items]
Repayments of Debt							$ 472,500,000
Before auto spin-off [Member] \| Convertible Debentures One Percent Due Twenty Thirty Five [Member]
Debt Instrument [Line Items]
Convertible debt shares per $1,000 principal amount										36.7360
Before auto spin-off [Member] \| Convertible Debentures 1.25% Due 2025 [Member]
Debt Instrument [Line Items]
Convertible debt shares per $1,000 principal amount									45.0106
After auto spin-off [Member] \| Convertible Debentures One Percent Due Twenty Thirty Five [Member]
Debt Instrument [Line Items]
Convertible debt shares per $1,000 principal amount										41.4576
After auto spin-off [Member] \| Convertible Debentures 1.25% Due 2025 [Member]
Debt Instrument [Line Items]
Convertible debt shares per $1,000 principal amount									50.7957