Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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Debt - Issuances and Borrowings (Details) - USD ($)				6 Months Ended
Debt - Issuances and Borrowings (Details) - USD ($)	May 13, 2021	Mar. 23, 2021	Jan. 14, 2021	Jun. 30, 2021
2.250% Senior Notes due 2026
Debt Instrument [Line Items]
Interest rate, stated percentage			2.25%
Principal Issuances			$ 1,000,000,000
Premiums and Issuance Costs			(7,000,000)
Net Proceeds from Issuance of Long-Term Debt			$ 993,000,000
2.625% Senior Notes due 2029
Debt Instrument [Line Items]
Interest rate, stated percentage			2.625%
Principal Issuances			$ 1,000,000,000
Premiums and Issuance Costs			(7,000,000)
Net Proceeds from Issuance of Long-Term Debt			$ 993,000,000
2.875% Senior Notes due 2031
Debt Instrument [Line Items]
Interest rate, stated percentage			2.875%
Principal Issuances			$ 1,000,000,000.0
Premiums and Issuance Costs			(6,000,000)
Net Proceeds from Issuance of Long-Term Debt			$ 994,000,000
2.625% Senior Notes Due 2026
Debt Instrument [Line Items]
Interest rate, stated percentage		2.625%
Principal Issuances		$ 1,200,000,000
Premiums and Issuance Costs		(7,000,000)
Net Proceeds from Issuance of Long-Term Debt		$ 1,193,000,000
3.375% Senior Notes due 2029
Debt Instrument [Line Items]
Interest rate, stated percentage		3.375%
Principal Issuances		$ 1,250,000,000
Premiums and Issuance Costs		(7,000,000)
Net Proceeds from Issuance of Long-Term Debt		$ 1,243,000,000
3.500% Senior Notes due 2031
Debt Instrument [Line Items]
Interest rate, stated percentage		3.50%
Principal Issuances		$ 1,350,000,000
Premiums and Issuance Costs		(8,000,000)
Net Proceeds from Issuance of Long-Term Debt		$ 1,342,000,000
2.250% Senior Notes due 2026, Issued May 13 2021
Debt Instrument [Line Items]
Interest rate, stated percentage	2.25%
Principal Issuances	$ 800,000,000
Premiums and Issuance Costs	(2,000,000)
Net Proceeds from Issuance of Long-Term Debt	$ 798,000,000
3.375% Senior Notes due 2029, Issued May 13 2021
Debt Instrument [Line Items]
Interest rate, stated percentage	3.375%
Principal Issuances	$ 1,100,000,000
Premiums and Issuance Costs	6,000,000
Net Proceeds from Issuance of Long-Term Debt	$ 1,106,000,000
3.500% Senior Notes due 2031, Issued May 13 2021
Debt Instrument [Line Items]
Interest rate, stated percentage	3.50%
Principal Issuances	$ 1,100,000,000
Premiums and Issuance Costs	6,000,000
Net Proceeds from Issuance of Long-Term Debt	$ 1,106,000,000
Senior Secured Notes Issued, Total
Debt Instrument [Line Items]
Principal Issuances				$ 9,800,000,000
Premiums and Issuance Costs				(32,000,000)
Net Proceeds from Issuance of Long-Term Debt				$ 9,768,000,000