Commitments and Contingencies - Guarantor Obligations (Details) $ in Millions	Dec. 31, 2020 USD ($)
Guarantor Obligations [Line Items]
Remainder of Fiscal 2021	$ 87
Fiscal 2022	281
Fiscal 2023 and Thereafter	645
Total	1,013
Surety bonds
Guarantor Obligations [Line Items]
Remainder of Fiscal 2021	14
Fiscal 2022	93
Fiscal 2023 and Thereafter	87
Total	194
Letters of credit
Guarantor Obligations [Line Items]
Remainder of Fiscal 2021	37
Fiscal 2022	147
Fiscal 2023 and Thereafter	527
Total	711
Stand-by letters of credit
Guarantor Obligations [Line Items]
Remainder of Fiscal 2021	36
Fiscal 2022	41
Fiscal 2023 and Thereafter	31
Total	$ 108