Debt (Schedule of Cash Tender Offer) (Details)	1 Months Ended
	Aug. 31, 2023 USD ($)
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	$ 2,250,000,000
Senior unsecured notes due 2024, interest rate of 5.900%
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	1,473,000,000
Debt Instrument Tender Purchase Price Per 1000 Principal Amount	999.92
Debt Instrument, Repurchase Amount	1,473,000,000
Interest Expense, Debt	12,000,000
Senior unsecured notes due 2025, interest rate of 6.050%
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	750,000,000
Debt Instrument Tender Purchase Price Per 1000 Principal Amount	1,002.85
Debt Instrument, Repurchase Amount	752,000,000
Interest Expense, Debt	20,000,000
Senior unsecured notes due 2024, interest rate of 3.500%
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	27,000,000
Debt Instrument Tender Purchase Price Per 1000 Principal Amount	983.95
Debt Instrument, Repurchase Amount	27,000,000
Interest Expense, Debt	$ 0