| In millions, except per share items | Jan-01-21 | Oct-02-20 | Jul-03-20 | Mar-31-20 | Dec-31-19 | Sep-30-19 | Jun-30-19 | Mar-31-19 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | -722 | -692 | -674 | -635 | 135 | 98 | 85 | 72 |
| Depreciation and amortization | 376 | 375 | 369 | 374 | 399 | 383 | 367 | 330 |
| Stock-based compensation | 27 | 23 | 23 | | 21 | 15 | 5 | |
| Deferred taxes | -48 | 7 | -4 | | 4 | -20 | -8 | |
| Change in working capital [+] | 126 | 79 | 78 | 95 | 66 | -32 | -30 | -18 |
| Accounts receivable | 51 | 24 | -24 | | 49 | 50 | 55 | |
| Other current assets | 16 | -1 | 31 | | 38 | 46 | 31 | |
| Other | 59 | 56 | 71 | 8 | -21 | -128 | -116 | -18 |
| Other operating activities | 840 | 810 | 781 | 767 | -17 | 102 | 68 | 78 |
| Cash from operations | 599 | 602 | 573 | 626 | 608 | 546 | 487 | 462 |
| |
| Capital expenditures [+] | -26 | -27 | -19 | -5 | 3 | 11 | 19 | 26 |
| Purchases of property and equipment | -26 | -27 | -19 | -5 | 3 | 11 | 19 | 26 |
| Sales of property and equipment | 10 | | 86 | | 77 | | | |
| Purchases of intangible assets | | | | | -4 | -3 | -1 | |
| Acquisitions | | | -318 | | | -265 | | |
| Other cash from investing | | | | -13 | | | | -1,656 |
| Cash from investing | -82 | -8 | -267 | -210 | -221 | -291 | -30 | -1,318 |
| |
| Cash dividends paid | -22 | -21 | -20 | -18 | -20 | -1 | 17 | 25 |
| Repurchase of common stock, net | | | | -157 | -105 | -70 | -74 | -59 |
| Option exercises | 1 | | | | | | | |
| Financing costs | | | | | | -3 | | |
| Other cash from financing | -245 | -417 | -171 | -122 | -246 | -124 | -412 | 989 |
| Cash from financing | -379 | -563 | -330 | -294 | -368 | -192 | -469 | 955 |
| |
| Free cash flow | 573 | 575 | 554 | 621 | 611 | 557 | 506 | 488 |
| Per share (diluted) | $4.71 | $4.73 | $4.55 | $3.82 | $3.74 | $3.40 | $3.07 | $2.95 |
| |
| Cash paid for interest | 81 | 87 | 93 | | 97 | 64 | 32 | |
| Cash paid for income taxes | 31 | 16 | | | 11 | 12 | -3 | |