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

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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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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

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
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- Definition

Debt Instrument, Covenant Terms, Maximum Consolidated First Lien Net Leverage Ratio

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- Definition

Debt Instrument, Covenant Terms, Minimum Liquidity Requirement

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- Definition

Debt Instrument, Debt Default, Option to Accelerate Amounts Due, Minimum Percentage of Aggregate Principal Amount of Debt Held

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- Definition

Debt Instrument, Fair Value, Excluding The Redemption Note

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- Definition

Debt Instrument, Redemption Percentage, Redeemable From Cash Proceeds From Equity Offerings, Maximum

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- Definition

Debt Instrument, Redemption Price, Percentage, Redeemable From Cash Proceeds From Equity Offerings

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- Definition

Long Term Debt Excluding Redemption Note

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Long-Term Debt - Additional Information (Detail)	Apr. 14, 2020 USD ($)	Apr. 10, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Fair value, excluding the redemption note			$ 9,960,000,000	$ 10,800,000,000
Long-term debt excluding the Redemption Note			$ 11,470,000,000	$ 10,520,000,000
WRF \| WRF Credit Facilities \| Credit Agreement \| Subsequent Event \| During Financial Covenant Relief Period
Debt Instrument [Line Items]
Minimum liquidity required to be maintained at all times during Financial Covenant Relief Period		$ 300,000,000.0
WRF \| WRF Credit Facilities \| Credit Agreement \| Subsequent Event \| First Fiscal Quarter of the Financial Covenant Increase Period
Debt Instrument [Line Items]
Debt Instrument, Covenant Terms, Maximum Consolidated First Lien Net Leverage Ratio		4.50
WRF \| WRF Credit Facilities \| Credit Agreement \| Subsequent Event \| Second Fiscal Quarter of the Financial Covenant Increase Period
Debt Instrument [Line Items]
Debt Instrument, Covenant Terms, Maximum Consolidated First Lien Net Leverage Ratio		4.25
WRF \| WRF Credit Facilities \| Credit Agreement \| Subsequent Event \| Third Fiscal Quarter of the Financial Covenant Increase Period
Debt Instrument [Line Items]
Debt Instrument, Covenant Terms, Maximum Consolidated First Lien Net Leverage Ratio		4.00
WRF \| WRF Credit Facilities \| Credit Agreement \| Subsequent Event \| Each Subsequent Fiscal Quarter Thereafter of the Financial Covenant Increase Period
Debt Instrument [Line Items]
Debt Instrument, Covenant Terms, Maximum Consolidated First Lien Net Leverage Ratio		3.75
WRF \| 2025 WRF Notes \| Senior Notes \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument, face amount	$ 600,000,000.0
Stated interest rate	7.75%
Event of default, option to accelerate amounts due, minimum percentage of aggregate principal amount of debt held	25.00%
WRF \| 2025 WRF Notes \| Senior Notes \| Subsequent Event \| Any Time Prior to April 15, 2022
Debt Instrument [Line Items]
Debt redemption price as percentage of principal	100.00%
Redemption percentage, redeemable from cash proceeds from equity offerings	35.00%
Debt redemption price as percentage of principal, redeemable from cash proceeds from equity offerings	107.75%
WRF \| 2025 WRF Notes \| Senior Notes \| Subsequent Event \| On or After April 15, 2022
Debt Instrument [Line Items]
Debt redemption price as percentage of principal	101.00%
WRF \| WRF 5 1/8% Senior Notes, due 2029 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate			5.125%