Debt (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of notes payable, capital leases and long-term debt

The carrying value of our credit facilities, finance leases and long-term debt as of December 31, 2021 and 2020 is listed in the following table, and is adjusted for the fair value of interest rate swaps, unamortized discounts, deferred issuance costs and the unamortized portion of adjustments to fair value recorded in purchase accounting. Original issue discounts and adjustments to fair value recorded in purchase accounting are amortized to interest expense over the term of the applicable instrument using the effective interest method.

		December 31, 2021						December 31, 2020
Maturity	Interest Rate	Principal		Adjustments		Carrying  Value		Principal		Adjustments		Carrying  Value
Credit facilities:
Uncommitted Credit Facility	Variable	$	—	$	—	$	—	$	—	$	—	$	—
$2.25 billion - June 2023	Variable	—		—		—		186.0		—		186.0
$3.0 billion - August 2026	Variable	24.3		—		24.3		—		—		—
Senior notes:
May 2023	4.750	300.0		(0.1)		299.9		300.0		4.8		304.8
August 2024	2.500	900.0		(4.8)		895.2		900.0		(6.6)		893.4
March 2025	3.200	500.0		(2.2)		497.8		500.0		(3.0)		497.0
November 2025	0.875	350.0		(2.6)		347.4		350.0		(3.3)		346.7
July 2026	2.900	500.0		(2.8)		497.2		500.0		(3.3)		496.7
November 2027	3.375	650.0		(3.8)		646.2		650.0		(4.5)		645.5
May 2028	3.950	800.0		(12.4)		787.6		800.0		(14.2)		785.8
March 2030	2.300	600.0		(5.9)		594.1		600.0		(6.5)		593.5
February 2031	1.450	650.0		(7.9)		642.1		650.0		(8.6)		641.4
February 2032	1.750	750.0		(6.6)		743.4		750.0		(7.1)		742.9
March 2033	2.375	700.0		(7.6)		692.4		—		—		—
March 2035	6.086	181.9		(12.8)		169.1		181.9		(13.4)		168.5
March 2040	6.200	399.9		(3.6)		396.3		399.9		(3.6)		396.3
May 2041	5.700	385.7		(5.0)		380.7		385.7		(5.1)		380.6
March 2050	3.050	400.0		(7.1)		392.9		400.0		(7.3)		392.7
Debentures:
May 2021	9.250	—		—		—		35.3		(0.1)		35.2
September 2035	7.400	148.0		(31.1)		116.9		148.1		(32.1)		116.0
Tax-exempt:
2023 - 2051	0.150 - 0.300 %	1,189.1		(7.6)		1,181.5		1,111.2		(6.5)		1,104.7
Finance leases:
2022 - 2063	0.806 - 9.750 %	249.4		—		249.4		206.5		—		206.5
Total Debt		$	9,678.3	$	(123.9)	9,554.4		$	9,054.6	$	(120.4)	8,934.2
Less: current portion						(8.2)						(168.1)
Long-term portion						$	9,546.2					$	8,766.1

Schedule of future maturities of debt

Aggregate principal maturities of notes payable, finance leases and other long-term debt as of December 31, 2021 follow:

2022	$	8.2
2023	475.2
2024	926.9
2025	856.7
2026	613.2
Thereafter	6,798.1
	$	9,678.3