Table:
($ in billions)

2019	2018	2017

Net cash operating activities	$14.8	$15.2	$16.7

Cash, restricted cash and short-term marketable securities	$ 9.0	$12.2	$12.8

credit facilities	$15.3	$15.3	$15.3

Watch the table in this image and convert it into a Markdown table in the text form.

| ($ in billions) |  |  |  |
| --- | --- | --- | --- |
|  | 2019 | 2018 | 2017 |
| Net cash operating activities | $14.8 | $15.2 | $16.7 |
| Cash, restricted cash and short-term marketable securities | $ 9.0 | $12.2 | $12.8 |
| credit facilities | $15.3 | $15.3 | $15.3 |