May 31, 2020

Quoted

Significant

prices in

other

Significant

Carrying

active

observable

unobservable

value

markets

inputs

inputs

In millions

(Fair value)

(Level 1)

(Level 2)

(Level 3)

Assets:

Restricted and unrestricted cash equivalents:

Money market securities

$

43.5

$

43.5

$

—

$

—

Total restricted and unrestricted cash equivalents

$

43.5

$

43.5

$

—

$

—

Available-for-sale securities:

Asset-backed securities

$

69.7

$

—

$

69.7

$

—

Corporate bonds

683.6

—

683.6

—

Municipal bonds

1,409.6

—

1,409.6

—

U.S. government agency and treasury securities

594.3

—

594.3

—

Total available-for-sale securities

$

2,757.2

$

—

$

2,757.2

$

—

Other

$

27.2

$

27.2

$

—

$

—

Liabilities:

Other long-term liabilities

$

26.8

$

26.8

$

—

$

—

May 31, 2019

Quoted

Significant

prices in

other

Significant

Carrying

active

observable

unobservable

value

markets

inputs

inputs

In millions

(Fair value)

(Level 1)

(Level 2)

(Level 3)

Assets:

Restricted and unrestricted cash equivalents:

Commercial paper

$

10.0

$

—

$

10.0

$

—

Money market securities

29.2

29.2

—

—

Total restricted and unrestricted cash equivalents

$

39.2

$

29.2

$

10.0

$

—

Available-for-sale securities:

Asset-backed securities

$

5.3

$

—

$

5.3

$

—

Corporate bonds

446.5

—

446.5

—

Municipal bonds

1,423.5

—

1,423.5

—

U.S. government agency and treasury securities

615.9

—

615.9

—

Variable rate demand notes

1,129.6

—

1,129.6

—

Total available-for-sale securities

$

3,620.8

$

—

$

3,620.8

$

—

Other

$

27.7

$

27.7

$

—

$

—

Liabilities:

Other long-term liabilities

$

27.0

$

27.0

$

—

$

—