Contracts with Customers Contracts with Customers

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Long-term Contracts or Programs Disclosure

Contracts with Customers

Unbilled receivables increased from $7,995 at December 31, 2020 to $10,009 at September 30, 2021, primarily driven by revenue recognized at Defense, Space & Security (BDS) and Global Services (BGS) in excess of billings.

Advances and progress billings increased from $50,488 at December 31, 2020 to $51,269 at September 30, 2021, primarily driven by advances on orders received at Commercial Airplanes (BCA), BDS, and BGS, partially offset by revenue recognized and the return of customer advances at BCA.

Revenues recognized during the nine months ended September 30, 2021 and 2020 from amounts recorded as Advances and progress billings at the beginning of each year were $10,131 and $6,752. Revenues recognized during the three months ended September 30, 2021 and 2020 from amounts recorded as Advances and progress billings at the beginning of each year were $2,816 and $1,497.