Debt Financing Arrangements (Long-Term Debt) (Details) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2021 EUR (€)	Sep. 10, 2021 EUR (€)	Mar. 25, 2021 EUR (€)	Dec. 31, 2020 USD ($)	Aug. 26, 2020 USD ($)
Debt Instruments [Line Items]
Long-term Debt	$ 8,581				$ 7,887
Current maturities	(570)				(2)
Total long-term debt	8,011				7,885
Notes One Point Seventy Five Percent Due In Two Thousand Twenty-Three [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 681				731
Debt Instrument, Face Amount | €		€ 600
Debt Instrument, Interest Rate, Stated Percentage	1.75%	1.75%
Debt instrument, maturity year	2023
Notes Four Point Five Percent due Two Thousand Forty-Nine [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 588				588
Debt Instrument, Face Amount	$ 600
Debt Instrument, Interest Rate, Stated Percentage	4.50%	4.50%
Debt instrument, maturity year	2049
Notes Two Point Five Percent Due in Two Thousand Twenty-Six [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 996				995
Debt Instrument, Face Amount	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	2.50%	2.50%
Debt instrument, maturity year	2026
Notes One Percent Due in Two Thousand Twenty-Five [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 735				789
Debt Instrument, Face Amount | €		€ 650
Debt Instrument, Interest Rate, Stated Percentage	1.00%	1.00%
Debt instrument, maturity year	2025
Notes Three Point Seventy-Five Percent Due in Two Thousand Forty-Seven [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 402				402
Debt Instrument, Face Amount	$ 408
Debt Instrument, Interest Rate, Stated Percentage	3.75%	3.75%
Debt instrument, maturity year	2047
Debentures five point three seven five percent due in two thousand thirty five [Member}
Debt Instruments [Line Items]
Long-term Debt	$ 425				424
Debt Instrument, Face Amount	$ 432
Debt Instrument, Interest Rate, Stated Percentage	5.375%	5.375%
Debt instrument, maturity year	2035
Debentures five point seven six five percent due in two thousand forty one [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 297				297
Debt Instrument, Face Amount	$ 297
Debt Instrument, Interest Rate, Stated Percentage	5.765%	5.765%
Debt instrument, maturity year	2041
Debentures five point nine three five percent due in two thousand thirty two [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 333				333
Debt Instrument, Face Amount	$ 336
Debt Instrument, Interest Rate, Stated Percentage	5.935%	5.935%
Debt instrument, maturity year	2032
Debentures four point zero one six percent due in two thousand forty three [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 258				255
Debt Instrument, Face Amount	$ 371
Debt Instrument, Interest Rate, Stated Percentage	4.016%	4.016%
Debt instrument, maturity year	2043
Debentures four point five three five percent due in two thousand forty two [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 283				281
Debt Instrument, Face Amount	$ 383
Debt Instrument, Interest Rate, Stated Percentage	4.535%	4.535%
Debt instrument, maturity year	2042
Debentures seven percent due in two thousand thirty one [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 159				159
Debt Instrument, Face Amount	$ 160
Debt Instrument, Interest Rate, Stated Percentage	7.00%	7.00%
Debt instrument, maturity year	2031
Debentures six point six two five percent due in two thousand twenty nine [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 144				144
Debt Instrument, Face Amount	$ 144
Debt Instrument, Interest Rate, Stated Percentage	6.625%	6.625%
Debt instrument, maturity year	2029
Debentures six point ninety-five due in two thousand ninety seven [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 154				154
Debt Instrument, Face Amount	$ 157
Debt Instrument, Interest Rate, Stated Percentage	6.95%	6.95%
Debt instrument, maturity year	2097
Debentures seven point five percent due in two thousand twenty seven [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 147				146
Debt Instrument, Face Amount	$ 147
Debt Instrument, Interest Rate, Stated Percentage	7.50%	7.50%
Debt instrument, maturity year	2027
Debentures six point forty-five percent due in two thousand thirty eight [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 102				102
Debt Instrument, Face Amount	$ 103
Debt Instrument, Interest Rate, Stated Percentage	6.45%	6.45%
Debt instrument, maturity year	2038
Debentures six point seventy-five percent due in two thousand twenty seven [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 103				103
Debt Instrument, Face Amount	$ 103
Debt Instrument, Interest Rate, Stated Percentage	6.75%	6.75%
Debt instrument, maturity year	2027
Other [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 177				174
Notes Two Point Twenty-Five Percent Due in 2030
Debt Instruments [Line Items]
Long-term Debt	988				987
Debt Instrument, Face Amount	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	3.25%	3.25%
Debt instrument, maturity year	2030
Notes Two Point Seventy-Five Percent, Due in 2025
Debt Instruments [Line Items]
Long-term Debt	$ 0				493
Debt Instrument, Face Amount	$ 500
Debt Instrument, Interest Rate, Stated Percentage	2.75%	2.75%
Debt instrument, maturity year	2025
Bonds Zero Percent Due in 2023 [Member]
Debt Instruments [Line Items]
Long-term Debt	$ 310				330
Debt Instrument, Face Amount						$ 300
Debt Instrument, Interest Rate, Stated Percentage						0.00%
Debt instrument, maturity year	2023
Notes Two Point Seven Percent Due in Twenty Fifty-One
Debt Instruments [Line Items]
Long-term Debt	$ 730				0
Debt Instrument, Face Amount	$ 750		€ 750
Debt Instrument, Interest Rate, Stated Percentage	2.70%	2.70%	2.70%
Debt instrument, maturity year	2051
Floating Rate Notes Due in 2022
Debt Instruments [Line Items]
Long-term Debt	$ 569				$ 0
Debt Instrument, Face Amount | €		€ 500		€ 500
Debt instrument, maturity year	2022