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Financing Activities - Schedule of Debt Extinguishment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Instrument [Line Items]
Loss on extinguishment of debt	$ 0	$ 76	$ 0	$ 192
Convertible Debt And Unsecured Debt
Debt Instrument [Line Items]
Cash paid for debt and interest		1,890		2,364
Principal repayment		1,791		2,153
Loss on extinguishment of debt		76		192
Non-cash amortization of debt discount and (issuance) costs		(2)		(7)
Accrued Interest		25		26
1.25% Convertible Notes due 2025 | Convertible Debt
Debt Instrument [Line Items]
Cash paid for debt and interest		240		649
Principal repayment		184		486
Loss on extinguishment of debt		59		171
Non-cash amortization of debt discount and (issuance) costs		(3)		(9)
Accrued Interest		$ 0		$ 1
1.25% Convertible Notes due 2025 | Convertible Debt | Level 2
Debt Instrument [Line Items]
Stated interest rate	1.25%	1.25%	1.25%	1.25%
5.125% Notes due 2027 | Unsecured Debt
Debt Instrument [Line Items]
Cash paid for debt and interest		$ 149		$ 209
Principal repayment		143		199
Loss on extinguishment of debt		3		6
Non-cash amortization of debt discount and (issuance) costs		1		2
Accrued Interest		$ 2		$ 2
5.125% Notes due 2027 | Unsecured Debt | Level 2
Debt Instrument [Line Items]
Stated interest rate	5.125%	5.125%	5.125%	5.125%
4.75% Notes due 2023 | Unsecured Debt
Debt Instrument [Line Items]
Stated interest rate		4.75%		4.75%
Cash paid for debt and interest		$ 1,274		$ 1,278
Principal repayment		1,247		1,250
Loss on extinguishment of debt		8		9
Non-cash amortization of debt discount and (issuance) costs		0		0
Accrued Interest		19		19
5.25% Notes due 2025 | Unsecured Debt
Debt Instrument [Line Items]
Cash paid for debt and interest		227		228
Principal repayment		217		218
Loss on extinguishment of debt		6		6
Non-cash amortization of debt discount and (issuance) costs		0		0
Accrued Interest		$ 4		$ 4
5.25% Notes due 2025 | Unsecured Debt | Level 2
Debt Instrument [Line Items]
Stated interest rate	5.25%	5.25%	5.25%	5.25%

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Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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