| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| |
| Cash flows from operating activities: | | | | | | | | |
| Net income | 199.9 | 446.6 | 604.4 | 739.1 | 99.5 | 680.8 | 360.1 | 160.9 |
| Adjustments to reconcile net income to cash flows from operating activities: | | | | | | | | |
| Depreciation and amortization | 254.0 | 232.0 | 213.5 | 200.7 | 196.9 | 226.2 | 260.1 | 103.6 |
| Stock-based compensation and other | 20.1 | 22.8 | 19.7 | 15.2 | 19.4 | 17.0 | 15.2 | 14.3 |
| Equity in net income of unconsolidated investments (net of tax) | | | | | | | | |
| Dividends received from unconsolidated investments and nonmarketable securities | 78.4 | 88.2 | 71.7 | 57.4 | 39.4 | 43.8 | 59.9 | 40.7 |
| Pension and postretirement benefit | -74.0 | 45.7 | 31.5 | 10.4 | -12.4 | 41.5 | -38.8 | 133.7 |
| Pension and postretirement contributions | -30.3 | -16.4 | -16.5 | -15.2 | -13.3 | -20.1 | -21.6 | -13.9 |
| Unrealized (gain) loss on investments in marketable securities | -3.8 | -4.6 | -2.8 | -0.5 | -3.1 | -3.7 | -1.2 | -0.8 |
| Loss on early extinguishment of debt | 29.0 | | 4.8 | | 52.8 | 1.9 | 5.4 | |
| Deferred income taxes | -38.5 | -2.0 | 14.4 | 49.2 | -41.9 | 21.1 | -136.3 | -64.9 |
| Other, net | 53.5 | 28.5 | -127.5 | -58.5 | 449.8 | 59.5 | -62.5 | 6.7 |
| Net cash provided by operating activities | 344.3 | 798.9 | 719.4 | 546.2 | 304.0 | 735.5 | 360.8 | 492.6 |
| |
| Cash flows from investing activities: | | | | | | | | |
| Acquisitions, net of cash acquired | | -22.6 | -820.0 | -11.4 | -44.4 | -208.7 | -2,100.5 | |
| Capital expenditures | -953.7 | -850.5 | -851.8 | -700.0 | -317.7 | -196.7 | -227.6 | -110.6 |
| Investments in equity and other corporate investments | -6.5 | -2.4 | -2.6 | -5.6 | -3.6 | | | |
| Net cash used in investing activities | -666.6 | -863.6 | -1,663.6 | -303.7 | -357.8 | 2,920.5 | -2,160.6 | -46.1 |
| |
| Cash flows from financing activities: | | | | | | | | |
| Repayments of long-term debt and credit agreements | -1,173.8 | -250.0 | -175.2 | | -778.2 | -1,252.3 | -2,582.9 | -6.0 |
| Proceeds from borrowings of long-term debt and credit agreements | | 452.2 | 1,597.8 | | 27.0 | | 2,250.0 | |
| Other debt repayments, net | 61.0 | 137.6 | -126.4 | -113.6 | 138.8 | -163.7 | 54.6 | -5.8 |
| Fees related to early extinguishment of debt | | | | | | | | |
| Dividends paid to noncontrolling interests | -96.1 | -32.1 | -83.2 | -14.8 | -36.8 | -35.9 | -23.3 | -15.5 |
| Proceeds from exercise of stock options | 18.4 | 40.4 | 4.8 | 3.6 | 8.2 | 9.4 | 0.5 | 2.7 |
| Withholding taxes paid on stock-based compensation award distributions | -8.1 | -5.1 | -11.0 | -17.2 | -8.4 | -2.2 | -1.5 | -3.3 |
| Other | | | | | | | -3.9 | |
| Net cash provided by financing activities | 50.2 | 177.3 | 1,042.7 | -786.5 | -1,086.9 | -1,580.0 | -478.4 | 1,609.3 |