Debt Obligations - Summary of Payment Obligations for Debt Instruments (Details) $ in Millions	Jun. 30, 2020 USD ($)
Debt Instrument [Line Items]
Total	$ 9,639.9
Less Than 1 Year	397.8
1-3 Years	1,798.7
3-5 Years	2,293.8
More Than 5 Years	5,149.6
Long-Term Debt Obligations [Member]
Debt Instrument [Line Items]
Total	7,164.9	[1]
1-3 Years	1,006.1	[1]
3-5 Years	1,693.1	[1]
More Than 5 Years	4,465.7	[1]
Interest on Debt Obligations [Member]
Debt Instrument [Line Items]
Total	2,475.0	[2]
Less Than 1 Year	397.8	[2]
1-3 Years	792.6	[2]
3-5 Years	600.7	[2]
More Than 5 Years	$ 683.9	[2]

[1] Represents scheduled future maturities of consolidated debt obligations for the periods indicated.

[2] Represents interest expense on debt obligations based on both fixed debt interest rates and prevailing June 30, 2020 rates for floating debt.