Debt | Other Credit Facilities (Details) - USD ($)
|
Jul. 31, 2018 |
Jan. 31, 2018 |
Feb. 27, 2017 |
| Line of Credit Facility |
|
|
|
| Accounts receivable, net |
$ 5,200,039,000
|
$ 6,035,716,000
|
|
| Standby Letters Of Credit |
15,300,000
|
|
|
| Credit Agreement |
|
|
|
| Line of Credit Facility |
|
|
|
| Line of Credit, Amount Outstanding |
0
|
0
|
|
| Line of Credit Facility, Maximum Borrowing Capacity |
1,250,000,000
|
|
|
| Term loan credit agreement |
|
|
|
| Line of Credit Facility |
|
|
|
| Debt Instrument, Face Amount |
|
|
$ 1,000,000,000
|
| Term loan credit agreement | 3 year maturity |
|
|
|
| Line of Credit Facility |
|
|
|
| Debt Instrument, Face Amount |
|
|
250,000,000
|
| Term loan credit agreement | 5 year maturity |
|
|
|
| Line of Credit Facility |
|
|
|
| Other Loans Payable, Long-term, Noncurrent |
$ 400,000,000
|
$ 500,000,000
|
|
| Debt Instrument, Face Amount |
|
|
$ 750,000,000
|
| Debt Instrument, Interest Rate, Stated Percentage |
3.58%
|
3.07%
|
|
| Receivables Securitization Program |
|
|
|
| Line of Credit Facility |
|
|
|
| Line of Credit, Amount Outstanding |
$ 0
|
$ 0
|
|
| Line of Credit Facility, Maximum Borrowing Capacity |
750,000,000
|
|
|
| Accounts receivable, net |
1,600,000,000
|
1,500,000,000
|
|
| Other Committed And Uncommitted Revolving Credit Facilities |
|
|
|
| Line of Credit Facility |
|
|
|
| Line of Credit, Amount Outstanding |
107,008,000
|
$ 119,826,000
|
|
| Line of Credit Facility, Maximum Borrowing Capacity |
$ 427,700,000
|
|
|
| Line of Credit Facility, Interest Rate at Period End |
7.07%
|
6.07%
|
|