February 29, 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:

Commercial paper

$

200.0

$

—

$

200.0

$

—

Time deposits

200.0

—

200.0

—

U.S. government agency and treasury securities

770.9

—

770.9

—

Money market securities

38.7

38.7

—

—

Total restricted and unrestricted cash equivalents

$

1,209.6

$

38.7

$

1,170.9

$

—

Available-for-sale securities:

Asset-backed securities

$

69.1

$

—

$

69.1

$

—

Corporate bonds

691.6

—

691.6

—

General obligation municipal bonds

758.7

—

758.7

—

Pre-refunded municipal bonds

22.2

—

22.2

—

Revenue municipal bonds

601.4

—

601.4

—

U.S. government agency and treasury securities

893.5

—

893.5

—

Variable rate demand notes

149.9

—

149.9

—

Total available-for-sale securities

$

3,186.4

$

—

$

3,186.4

$

—

Other

$

27.2

$

27.2

$

—

$

—

Liabilities:

Other long-term liabilities

$

26.7

$

26.7

$

—

$

—

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

—

General obligation municipal bonds

847.8

—

847.8

—

Pre-refunded municipal bonds

25.8

—

25.8

—

Revenue municipal bonds

549.9

—

549.9

—

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

$

—

$

—