Long-Term Debt and Common Stock (Details) - USD ($)			3 Months Ended		12 Months Ended
	May 05, 2022	Feb. 24, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Debt Instrument Table [Line Items]
Debt Instrument, Face Amount			$ 1,250,000,000
Common Stock Dividends Declared (in dollars per share)		$ 0.75	$ 1.75	$ 0.4125
Special Cash Dividend Declared (in dollars per share)		$ 1.00
Subsequent Event
Debt Instrument Table [Line Items]
Common Stock Dividends Declared (in dollars per share)	$ 0.75
Special Cash Dividend Declared (in dollars per share)	$ 1.80
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity			$ 0		$ 0
Revolving Credit Agreement (New Facility) [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 2,000,000,000
Line of Credit Facility, Expiration Date			Jun. 27, 2024
Line Of Credit Facility Increase Additional Borrowings			$ 3,000,000,000
Maximum Total Debt To Total Capitalization Ratio Allowed Under Financial Covenant			65.00%
Borrowings Outstanding			$ 0		$ 0
Eurodollar [Member] | Revolving Credit Agreement (New Facility) [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate (in hundredths)			1.35%
Base Rate [Member] | Revolving Credit Agreement (New Facility) [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate (in hundredths)			3.50%
2.625% Senior Notes Due 2023
Debt Instrument Table [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			2.625%