Contract with Customer, Liability, Incentive Credits, Current

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- Definition

Recovery Credit Program Maximum Allowed Amount

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- Definition

Revenue Performance Obligation, Expected Timing

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

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- Definition

Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

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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.

+ References

No definition available.

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Description of Business and Significant Accounting Policies - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended
	Apr. 26, 2021 USD ($)	Mar. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)
Product Information [Line Items]
Number of reportable segments \| segment		1
Incentive credits		$ 25
Prepayments offsetting accrued health insurance costs		$ 52	$ 49
Subsequent Event
Product Information [Line Items]
Performance obligation period (in months)	12 months
Recovery credit program, maximum allowed amount	$ 145
Non-US \| Revenue \| Foreign Sales
Product Information [Line Items]
Percent of concentration risk (less than)		1.00%
Health Care
Product Information [Line Items]
Prepayments offsetting accrued health insurance costs		$ 70	$ 58