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Benefit Received From Note Hedge

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Conversion Of Notes Base Conversion Price

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Debt Instrument, Percentage Of Face Amount Issued

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Equity Component of Repayment of Convertible Debt, Fair Value

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Extinguishment Of Debt, Amount, Debt Component

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Fair Value Measurement Debt Basis Amount

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Percentage Of Purchase Price Of Notes Which Should Be Paid Upon Fundamental Change

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The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

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Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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

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

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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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Face (par) amount of the original debt instrument that was repurchased.

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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 unamortized debt discount (premium) and debt issuance costs.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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Long-Term Debt - Additional Information (Details) shares in Millions		1 Months Ended	3 Months Ended			12 Months Ended
	Aug. 11, 2020 USD ($) shares	Aug. 31, 2020 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($) day trading_day shares	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) shares	Jun. 30, 2017 USD ($)
Debt Instrument [Line Items]
Estimated fair value of the note based on the closing trading price				$ 100		$ 100
Percentage of purchase price of notes which should be paid upon fundamental change (percent)				100.00%
Benefit from exercise of 2022 Note Hedge				$ 102,000,000	$ 4,000,000
Warrant exercise period \| trading_day				60
2022 Warrants
Debt Instrument [Line Items]
Number of shares to be issued upon exercise of the Warrants (in shares) \| shares				0.5		2.3
Number of potential securities issued upon automatic exercise of the Warrants (in shares) \| shares				0.6
Stock Price Trigger Measurement
Debt Instrument [Line Items]
Trading days threshold \| day				20
Consecutive trading days threshold, total \| day				30
Threshold percentage of stock price trigger (percent)				130.00%
Notes Price Trigger Measurement
Debt Instrument [Line Items]
Trading days threshold \| day				5
Consecutive trading days threshold, total \| day				5
Threshold percentage of stock price trigger (percent)				98.00%
Conversion of notes base conversion price				$ 1,000
2030 Notes
Debt Instrument [Line Items]
Stated interest rate		1.40%
Debt term		10 years
Face amount of debt				1,500,000,000		$ 1,500,000,000
Percentage of principle issued		0.9963
Payments of debt issuance costs		$ 13,000,000
2022 Notes
Debt Instrument [Line Items]
Stated interest rate							0.00%
Face amount of debt				135,000,000		$ 169,000,000	$ 782,500,000
Equity recorded at time of issuance							$ 160,000,000
Cash paid for settlement of debt				34,000,000
Fair value adjustments				(102,000,000)
Benefit from exercise of 2022 Note Hedge				$ 102,000,000
Repurchased face amount	$ 497,000,000
Net proceeds from unwind of 2022 Note Hedge	1,100,000,000
Extinguishment of debt, amount, debt component	493,000,000
Extinguishment of debt, amount, equity component	1,100,000,000
Loss on extinguishment of 2022 Notes	39,000,000
Unamortized debt discount and unamortized debt issuance costs	$ 43,000,000
Reduction of aggregate number of call options (in shares) \| shares	3.7
2022 Notes \| Forecast
Debt Instrument [Line Items]
Cash paid for settlement of debt			$ 30,000,000