Variable Interest Entities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Total assets	$ 7,038	$ 6,492
Total liabilities	7,592
Variable Interest Entity, Consolidated, Liabilities, Current		7,065
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Total assets		4,573
Current Assets
Variable Interest Entity [Line Items]
Total assets	4,990
Current Liabilities
Variable Interest Entity [Line Items]
Total liabilities	5,352	4,916
Noncurrent Assets
Variable Interest Entity [Line Items]
Total assets	2,048	1,919
Noncurrent Liabilities
Variable Interest Entity [Line Items]
Total liabilities	$ 2,240	$ 2,149
IAE International Aero Engines AG
Variable Interest Entity [Line Items]
Variable Interest Entity, Methodology for Determining Whether Entity is Primary Beneficiary	Pratt & Whitney holds a 61% net interest in the International Aero Engines AG (IAE) collaboration with MTU Aero Engines AG (MTU) and Japanese Aero Engines Corporation (JAEC) and a 49.5% ownership interest in IAE. IAE's business purpose is to coordinate the design, development, manufacturing and product support of the V2500 program through involvement with the collaborators.
International Aero Engines LLC
Variable Interest Entity [Line Items]
Variable Interest Entity, Methodology for Determining Whether Entity is Primary Beneficiary	Additionally, Pratt & Whitney, JAEC and MTU are participants in International Aero Engines, LLC (IAE LLC), whose business purpose is to coordinate the design, development, manufacturing and product support for the PW1100G-JM engine for the Airbus A320neo aircraft and the PW1400G-JM engine for the Irkut MC21 aircraft. Pratt & Whitney holds a 59% net interest and a 59% ownership interest in IAE LLC. IAE and IAE LLC retain limited equity with the primary economics of the programs passed to the participants.