| In millions, except per share items | Sep-30-13 | Jun-30-13 | Mar-31-13 | Dec-31-12 | Sep-30-12 | Jun-30-12 | Mar-31-12 | Dec-31-11 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | 186.0 | 178.0 | 136.0 | 48.0 | 116.0 | 131.0 | 95.0 | 81.0 |
| Depreciation and amortization | 67.0 | 64.0 | 64.0 | 65.0 | 64.0 | 66.0 | 66.0 | 68.0 |
| Stock-based compensation | 13.0 | 15.0 | 19.0 | 14.0 | 10.0 | 14.0 | 13.0 | 10.0 |
| Deferred taxes | -73.0 | 6.0 | -7.0 | 10.0 | -20.0 | -19.0 | 77.0 | -17.0 |
| Change in working capital [+] | -153.0 | 28.0 | 137.0 | -309.0 | -414.0 | 60.0 | 10.0 | 130.0 |
| Accounts receivable | 42.0 | 9.0 | -46.0 | 71.0 | 18.0 | 24.0 | -27.0 | -8.0 |
| Deferred revenues | 165.0 | -49.0 | 276.0 | | 158.0 | -64.0 | 286.0 | |
| Other | -360.0 | 68.0 | -93.0 | -380.0 | -590.0 | 100.0 | -249.0 | 138.0 |
| Other operating activities | -33.0 | -31.0 | -51.0 | 450.0 | 173.0 | -24.0 | -61.0 | 53.0 |
| Cash from operations | 7.0 | 260.0 | 298.0 | 278.0 | -71.0 | 228.0 | 200.0 | 325.0 |
| |
| Capital expenditures | -37.0 | -32.0 | -27.0 | -66.0 | -41.0 | -41.0 | -43.0 | -54.0 |
| Purchases of property and equipment | -37.0 | -32.0 | -27.0 | -66.0 | -41.0 | -41.0 | -43.0 | -54.0 |
| Acquisitions | | | | | | | | -40.0 |
| Sales of short-term investments | 522.0 | 325.0 | 199.0 | | 583.0 | 267.0 | 272.0 | |
| Sales of short-term investments | 522.0 | 325.0 | 199.0 | | 583.0 | 267.0 | 272.0 | |
| Other cash from investing | -410.0 | | -189.0 | -44.0 | -582.0 | | -270.0 | -18.0 |
| Cash from investing | 75.0 | -70.0 | -17.0 | -110.0 | -40.0 | -134.0 | -41.0 | -112.0 |
| |
| Cash dividends paid | -73.0 | -73.0 | -73.0 | -71.0 | -74.0 | -75.0 | -77.0 | -78.0 |
| Repurchase of common stock, net | 2.0 | | | -28.0 | -120.0 | -177.0 | -127.0 | -100.0 |
| Other cash from financing | 70.0 | -320.0 | -9.0 | -51.0 | 219.0 | 195.0 | -11.0 | 40.0 |
| Cash from financing | -1.0 | -393.0 | -82.0 | -150.0 | 25.0 | -57.0 | -215.0 | -138.0 |
| |
| Free cash flow | -30.0 | 228.0 | 271.0 | 212.0 | -112.0 | 187.0 | 157.0 | 271.0 |
| Per share (diluted) | ($0.12) | | $1.11 | $0.85 | ($0.45) | | $0.61 | $1.03 |
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