Derivatives and Hedging - Net Investments in Foreign Operations Risk Management Narrative (Details) - Net Investment Hedging $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2021 EUR (€)	Dec. 31, 2020 EUR (€)	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Derivatives, Fair Value
European denominated commercial paper \| €	€ 0	€ 0
Non-derivative hedging instrument, unrealized gain \| $			$ 29	$ 29

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.

No definition available.

Name:	us-gaap_DerivativesFairValueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration