Leases - 840 Disclosure (Details) $ in Millions	Mar. 31, 2019 USD ($)
Operating Leases
Fiscal year ending March 31, 2020	$ 2,277
Fiscal year ending March 31, 2021	2,199
Fiscal year ending March 31, 2022	1,793
Fiscal year ending March 31, 2023	1,358
Fiscal year ending March 31, 2024	1,039
Thereafter	3,101
Total lease payments	11,767
Capital Leases and Financing Obligations
Fiscal year ending March 31, 2020	262
Fiscal year ending March 31, 2021	150
Fiscal year ending March 31, 2022	92
Fiscal year ending March 31, 2023	44
Fiscal year ending March 31, 2024	12
Thereafter	0
Total lease payments	$ 560

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