Summary of Significant Accounting Policies - Finite-Lived Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2020
Customer relationships | Minimum
Finite-Lived Intangible Assets
Weighted average useful life (years)	8 years
Customer relationships | Maximum
Finite-Lived Intangible Assets
Weighted average useful life (years)	25 years
Developed technology | Minimum
Finite-Lived Intangible Assets
Weighted average useful life (years)	3 years
Developed technology | Maximum
Finite-Lived Intangible Assets
Weighted average useful life (years)	10 years
Trade names | Minimum
Finite-Lived Intangible Assets
Weighted average useful life (years)	5 years
Trade names | Maximum
Finite-Lived Intangible Assets
Weighted average useful life (years)	20 years
Other intangible assets | Maximum
Finite-Lived Intangible Assets
Weighted average useful life (years)	5 years