Borrowings and Lines of Credit (Long-Term Debt) (Details) € in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 EUR (€)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Other (including finance leases)	$ 263			$ 270
Long-term Debt, Gross	31,254			31,300
Other (fair value adjustments, (discounts)/premiums, and debt issuance costs)	46			51
Total long-term debt	31,300			31,351
Less: current portion	26			24
Long-term debt, net of current portion	$ 31,274			31,327
Notes 8.750% Due 2021
Debt Instrument [Line Items]
Repayments of Debt		$ 250
Debt Instrument, Interest Rate, Stated Percentage		8.75%
Debt Instrument, Maturity Date, Description		2021
Notes 3.650% Due 2023
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.65%		3.65%
Debt Instrument, Maturity Date, Description	2023
Long-term Debt, Gross	$ 171			171
Notes 3.700% Due 2023
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.70%		3.70%
Debt Instrument, Maturity Date, Description	2023
Long-term Debt, Gross	$ 400			400
Notes 3.200% Due 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.20%		3.20%
Debt Instrument, Maturity Date, Description	2024
Long-term Debt, Gross	$ 950			950
Notes 3.150% Due 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.15%		3.15%
Debt Instrument, Maturity Date, Description	2024
Long-term Debt, Gross	$ 300			300
Notes 3.950% Due 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.95%		3.95%
Debt Instrument, Maturity Date, Description	2025
Long-term Debt, Gross	$ 1,500			1,500
Notes 2.650% Due 2026
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.65%		2.65%
Debt Instrument, Maturity Date, Description	2026
Long-term Debt, Gross	$ 719			719
Notes 3.125% Due 2027
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.125%		3.125%
Debt Instrument, Maturity Date, Description	2027
Long-term Debt, Gross	$ 1,100			1,100
Notes 3.500% Due 2027
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.50%		3.50%
Debt Instrument, Maturity Date, Description	2027
Long-term Debt, Gross	$ 1,300			1,300
Notes 7.200% Due 2027
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.20%		7.20%
Debt Instrument, Maturity Date, Description	2027
Long-term Debt, Gross	$ 382			382
Notes 7.100% Due 2027
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.10%		7.10%
Debt Instrument, Maturity Date, Description	2027
Long-term Debt, Gross	$ 135			135
Notes 6.700% Due 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.70%		6.70%
Debt Instrument, Maturity Date, Description	2028
Long-term Debt, Gross	$ 285			285
Notes 7.000% Due 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.00%		7.00%
Debt Instrument, Maturity Date, Description	2028
Long-term Debt, Gross	$ 185			185
Notes 4.125% Due 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.125%		4.125%
Debt Instrument, Maturity Date, Description	2028
Long-term Debt, Gross	$ 3,000			3,000
Notes 7.500% Due 2029
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%		7.50%
Debt Instrument, Maturity Date, Description	2029
Long-term Debt, Gross	$ 414			414
Notes 2.150% Due 2030
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.15%		2.15%
Debt Instrument, Maturity Date, Description	2030
Debt Instrument, Face Amount | €			€ 500
Long-term Debt, Gross	$ 526			565
Notes 2.250% Due 2030
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.25%		2.25%
Debt Instrument, Maturity Date, Description	2030
Long-term Debt, Gross	$ 1,000			1,000
Notes 1.900% due 2031
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.90%		1.90%
Debt Instrument, Maturity Date, Description	2031
Long-term Debt, Gross	$ 1,000			1,000
Notes 2.375% Due 2032
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.375%		2.375%
Debt Instrument, Maturity Date, Description	2032
Long-term Debt, Gross	$ 1,000			1,000
Notes 5.400% Due 2035
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.40%		5.40%
Debt Instrument, Maturity Date, Description	2035
Long-term Debt, Gross	$ 446			446
Notes 6.050% Due 2036
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.05%		6.05%
Debt Instrument, Maturity Date, Description	2036
Long-term Debt, Gross	$ 410			410
Notes 6.800% Due 2036
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.80%		6.80%
Debt Instrument, Maturity Date, Description	2036
Long-term Debt, Gross	$ 117			117
Notes 7.000% Due 2038
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.00%		7.00%
Debt Instrument, Maturity Date, Description	2038
Long-term Debt, Gross	$ 148			148
Notes 6.125% Due 2038
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.125%		6.125%
Debt Instrument, Maturity Date, Description	2038
Long-term Debt, Gross	$ 575			575
Notes 4.450% Due 2038
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.45%		4.45%
Debt Instrument, Maturity Date, Description	2038
Long-term Debt, Gross	$ 750			750
Notes 5.700% Due 2040
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.70%		5.70%
Debt Instrument, Maturity Date, Description	2040
Long-term Debt, Gross	$ 553			553
Notes 4.875% Due 2040
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.875%		4.875%
Debt Instrument, Maturity Date, Description	2040
Long-term Debt, Gross	$ 600			600
Notes 4.700% Due 2041
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.70%		4.70%
Debt Instrument, Maturity Date, Description	2041
Long-term Debt, Gross	$ 425			425
Notes 4.500% Due 2042
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.50%		4.50%
Debt Instrument, Maturity Date, Description	2042
Long-term Debt, Gross	$ 3,500			3,500
Notes 4.800% Due 2043
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.80%		4.80%
Debt Instrument, Maturity Date, Description	2043
Long-term Debt, Gross	$ 400			400
Notes 4.200% Due 2044
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.20%		4.20%
Debt Instrument, Maturity Date, Description	2044
Long-term Debt, Gross	$ 300			300
Notes 4.150% Due 2045
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.15%		4.15%
Debt Instrument, Maturity Date, Description	2045
Long-term Debt, Gross	$ 850			850
Notes 3.750% Due 2046
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.75%		3.75%
Debt Instrument, Maturity Date, Description	2046
Long-term Debt, Gross	$ 1,100			1,100
Notes 4.050% Due 2047
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.05%		4.05%
Debt Instrument, Maturity Date, Description	2047
Long-term Debt, Gross	$ 600			600
Notes 4.350% Due 2047
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.35%		4.35%
Debt Instrument, Maturity Date, Description	2047
Long-term Debt, Gross	$ 1,000			1,000
Notes 4.625% Due 2048
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.625%		4.625%
Debt Instrument, Maturity Date, Description	2048
Long-term Debt, Gross	$ 1,750			1,750
Notes 3.125% Due 2050
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.125%		3.125%
Debt Instrument, Maturity Date, Description	2050
Long-term Debt, Gross	$ 1,000			1,000
Notes 2.820% due 2051
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.82%		2.82%
Debt Instrument, Maturity Date, Description	2051
Long-term Debt, Gross	$ 1,000			1,000
Notes 3.030% Due 2052
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.03%		3.03%
Debt Instrument, Maturity Date, Description	2052
Long-term Debt, Gross	$ 1,100			$ 1,100