Supplemental Financial Information - Accrued Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Accrued Liabilities, Current [Abstract]
Deferred Payroll Support Program grant proceeds	$ 763	$ 0
Extended Emergency Time Off	48	393
Voluntary Separation Program	112	143
Profitsharing and savings plans	136	25
Vendor prepayment	0	600
Vacation pay	448	436
Health	109	111
Workers compensation	145	161
Property and income taxes	102	84
Interest	47	49
Deferred supplier payments	151	0
Other	292	257
Accrued liabilities	$ 2,353	$ 2,259

Accrual for Property and Income Taxes

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- Definition

Deferred Supplier Payments, Current

+ References

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- Definition

Extended Emergency Time Off Accrued Liability

+ References

No definition available.

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- Definition

Proceeds from Payroll Support Program Grant Remaining to be Allocated to Payroll Support, Voluntary Separation, net

+ References

No definition available.

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- Definition

Vendor Prepayment

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No definition available.

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- Definition

Voluntary Separation Program 2020 Accrued Liability

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No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 8
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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for unused vacation time owed to employees based on the entity's vacation benefit given to its employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements payable within one year (or the normal operating cycle, if longer). Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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- Definition

Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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