CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operations
Net income		$ 1,295,000,000	$ 1,110,000,000	$ 1,011,000,000
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization		890,000,000	823,000,000	789,000,000
Pension settlement charges		2,000,000	46,000,000	755,000,000
Net periodic pension benefit and other postretirement costs		99,000,000	81,000,000	22,000,000
Deferred income taxes		(146,000,000)	(88,000,000)	(310,000,000)
Stock compensation		146,000,000	130,000,000	122,000,000
Loss on debt extinguishment		5,000,000	110,000,000	0
Intangible asset impairments		0	17,000,000	31,000,000
Settlement of interest rate derivative contracts		0	(173,000,000)	0
Other		92,000,000	86,000,000	115,000,000
Changes in balance sheet items:
Accounts receivable, net		(170,000,000)	(119,000,000)	(52,000,000)
Inventories		(37,000,000)	(162,000,000)	4,000,000
Prepaid expenses and other current assets		(41,000,000)	(37,000,000)	(31,000,000)
Accounts payable		104,000,000	57,000,000	(23,000,000)
Accrued expenses and other current liabilities		108,000,000	86,000,000	(196,000,000)
Other		(125,000,000)	(97,000,000)	(127,000,000)
Cash flows from operations – continuing operations		2,222,000,000	1,870,000,000	2,110,000,000
Cash flows from operations – discontinued operations		0	(2,000,000)	(6,000,000)
Cash flows from operations		2,222,000,000	1,868,000,000	2,104,000,000
Cash flows from investing activities
Capital expenditures		(743,000,000)	(709,000,000)	(696,000,000)
Acquisitions, net of cash acquired, and investments		(10,502,000,000)	(494,000,000)	(418,000,000)
Other investing activities, net		45,000,000	24,000,000	14,000,000
Cash flows from investing activities		(11,200,000,000)	(1,179,000,000)	(1,100,000,000)
Cash flows from financing activities
Issuances of debt		11,903,000,000	1,885,000,000	1,661,000,000
Repayments of debt		(2,823,000,000)	(1,181,000,000)	0
Net increase (decrease) in debt with original maturities of three months or less		246,000,000	(226,000,000)	222,000,000
Cash dividends on common stock		(530,000,000)	(473,000,000)	(423,000,000)
Proceeds from stock issued under employee benefit plans		187,000,000	202,000,000	356,000,000
Purchases of treasury stock		(600,000,000)	(500,000,000)	(1,270,000,000)
Debt issuance costs		(98,000,000)	(5,000,000)	(2,000,000)
Other financing activities, net		(40,000,000)	(47,000,000)	(46,000,000)
Cash flows from financing activities		8,245,000,000	(345,000,000)	498,000,000
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash		(47,000,000)	57,000,000	(5,000,000)
Increase (decrease) in cash, cash equivalents and restricted cash		(780,000,000)	401,000,000	1,497,000,000
Cash, cash equivalents and restricted cash at beginning of year	[1]	3,736,000,000	3,335,000,000	1,838,000,000
Cash, cash equivalents and restricted cash at end of year	[1]	2,956,000,000	3,736,000,000	$ 3,335,000,000
Cash and cash equivalents		2,951,000,000	3,730,000,000
Restricted cash included in prepaid expenses and other current assets		$ 5,000,000	$ 6,000,000

[1] We did not have restricted cash balances as of December 31, 2019. The following table provides a reconciliation of cash, cash equivalents and restricted cash amounts as shown in the consolidated statement of cash flows to the amount reported in the consolidated balance sheet as of December 31, 2021 and 2020: As of December 31 (in millions)20212020Cash and cash equivalents$2,951 $3,730 Restricted cash included in prepaid expenses and other current assets5 6 Cash, cash equivalents and restricted cash$2,956 $3,736