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Common Stock, Dividends, Per Share, Variable Cash

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of interest capitalized during the period.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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Amount remaining of a stock repurchase plan authorized.

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Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the cost method.

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Debt and Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		1 Months Ended			3 Months Ended
	Mar. 23, 2022	Apr. 30, 2022	Apr. 29, 2022	Jul. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Long-term debt					$ 9,621		$ 9,450
Interest costs					$ 153	$ 160
Treasury stock purchases (in shares)					12.3
Cost per share repurchased (in dollars per share)					$ 44.02
Shares repurchased					$ 541
Dividends declared per share of common stock (in dollars per share)	$ 0.15				$ 0.15	$ 0.075
Base cash dividend (in dollars per share)	0.075
Variable cash dividend (in dollars per share)	$ 0.075
Subsequent event
Debt Instrument [Line Items]
Treasury stock purchases (in shares)			28.7
Cost per share repurchased (in dollars per share)			$ 41.64
Shares repurchased			$ 1,200
Remaining authorized shares repurchase amount			$ 1,800
Property, Plant and Equipment [Member]
Debt Instrument [Line Items]
Interest costs capitalized					$ 26	$ 15
Line of Credit \| PT-FI Term Loan
Debt Instrument [Line Items]
Long-term debt				$ 667
Line of Credit \| PT-FI Term Loan
Debt Instrument [Line Items]
Long-term debt					603		$ 432
Long-term Debt, Gross					614
Line of Credit \| Letter of Credit
Debt Instrument [Line Items]
Letter of credit					8
Revolving credit facility, availability					1,500
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt					0
Letter of credit				333
Revolving credit facility, availability					3,500
Line of Credit \| Revolving Credit Facility \| Maturing 2024 [Member]
Debt Instrument [Line Items]
Revolving credit facility, availability					3,280
Line of Credit \| Revolving Credit Facility \| Maturing 2023 [Member]
Debt Instrument [Line Items]
Revolving credit facility, availability					$ 220
Line of Credit \| Unsecured Credit Facility
Debt Instrument [Line Items]
Debt, principal				$ 1,000
Debt instrument, term				5 years
Senior Notes \| PT-FI \| Subsequent event
Debt Instrument [Line Items]
Debt, principal		$ 3,000
Proceeds from debt, net of issuance costs		2,990
Senior Notes \| PT-FI \| 4.763% Senior Notes Due 2027 \| Subsequent event
Debt Instrument [Line Items]
Debt, principal		750
Senior Notes \| PT-FI \| 5.315% Senior Notes Due 2032 \| Subsequent event
Debt Instrument [Line Items]
Debt, principal		1,500
Senior Notes \| PT-FI \| 6.200% Senior Notes Due 2052 \| Subsequent event
Debt Instrument [Line Items]
Debt, principal		$ 750