Goodwill and Intangible Assets, net - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) - Customer relationships $ in Millions	Sep. 30, 2020 USD ($)
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Remainder of 2020	$ 20
Finite-lived intangible assets, amortization expense, 2021	78
Finite-lived intangible assets, amortization expense, 2022	64
Finite-lived intangible assets, amortization expense, 2023	60
Finite-lived intangible assets, amortization expense, 2024	60
Finite-lived intangible assets, amortization expense, 2025	$ 60