Accounting Policies and Supplemental Disclosures - Unearned Revenue (Details) - USD ($) $ in Billions	3 Months Ended
Mar. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Unearned revenue		$ 20.9
Unearned revenue, revenue recognized	$ 6.1
Unearned revenue, long-term	6.4	$ 5.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, contracts exceeding one year	$ 157.7
Remaining performance obligation, weighted average remaining life	4 years 1 month 6 days

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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