Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] - USD ($) $ in Millions	Apr. 07, 2021	Apr. 01, 2021
Subsequent Event [Line Items]
U.S. defined benefit pension plans, company's contribution		$ 500
6.75% Notes, due 2024 [Member]
Subsequent Event [Line Items]
Redemption of senior note	$ 750
Debt instrument redemption price percentage	103.375%

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

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

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Period Type:	duration

- Definition

The cash outflow for the settlement of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, as it matures.

+ References

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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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- Details

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