Deferred Compensation Arrangement With Individual, Vesting, Percentage

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- Definition

Dilutive impact of restricted shares and share units during the period

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Rights, Performance Period

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No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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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

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

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No definition available.

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- Definition

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

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- Definition

The per share price that the individual must pay to acquire shares under the deferred compensation arrangement.

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- Definition

The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date.

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

Net number of non-option equity instruments granted to participants.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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Earnings per Share - Additional information (Details) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended		3 Months Ended		9 Months Ended
	Dec. 01, 2018	Dec. 01, 2015	Nov. 30, 2018	Nov. 30, 2015	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Impact of restricted shares, restricted share units and performance share units (in shares)					1,700,000	1,700,000	2,100,000	2,100,000
Share-based compensation expense					$ 5	$ 4	$ 13	$ 14
Impact of convertible notes (in shares)					900,000	900,000	800,000	1,000,000.0
Convertible Notes Payable \| 7.875% Convertible Notes Due 2026
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest rate					7.875%		7.875%
Executive Officer
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number or shares issuable per performance share unit (in shares)	1			1
Executive Officer \| Performance Shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exercise price (in usd per share)	$ 16.50	$ 10.51
Executive Officer \| Performance Shares \| Performance period of October 1, 2018 to September 30, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Performance period			3 years
Shares authorized for grant (in shares)			500,000
Executive Officer \| Performance Shares \| Performance period of October 1, 2018 to September 30, 2021 \| Minimum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Performance-based vesting percentage							0.00%
Executive Officer \| Performance Shares \| Performance period of October 1, 2018 to September 30, 2021 \| Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Performance-based vesting percentage							200.00%
Executive Officer \| Performance Shares \| Performance period of October 1, 2018 to September 30, 2021 \| Performance Objective One
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Award vesting rights percentage							50.00%
Executive Officer \| Performance Shares \| Performance period of October 1, 2018 to September 30, 2021 \| Performance Objective Two
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Award vesting rights percentage							50.00%
Executive Officer \| Performance Shares \| Performance period of October 1, 2015 to September 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Performance period				3 years
Executive Officer \| Restricted Share Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exercise price (in usd per share)		$ 10.51
Shares granted (in shares)			400,000	500,000
Vesting period	3 years	3 years