Benefit Plans - Weighted Average Interest Crediting Rating by Geographic Location (Details) - Pension benefits	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
United States
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Weighted-average interest crediting rating used to determine net periodic benefit cost	3.30%	3.30%	3.30%
International plans
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Weighted-average interest crediting rating used to determine net periodic benefit cost	0.52%	0.85%	0.41%

Weighted-average interest crediting rate used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, cash balance and other defined benefit plans with promised interest crediting rate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(4)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Name:	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration