Borrowings and Lines of Credit (Repayments of Long-term Debt) (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($)
Notes 5.700% Due 2040 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 447
Debt Instrument, Interest Rate, Stated Percentage	5.70%
Debt Instrument, Maturity Year Date	2040
Notes 6.125% Due 2038 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 425
Debt Instrument, Interest Rate, Stated Percentage	6.125%
Debt Instrument, Maturity Year Date	2038
Notes 6.050% Due 2036 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 190
Debt Instrument, Interest Rate, Stated Percentage	6.05%
Debt Instrument, Maturity Year Date	2036
Notes 5.400% Due 2035 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 154
Debt Instrument, Interest Rate, Stated Percentage	5.40%
Debt Instrument, Maturity Year Date	2035
Notes 7.500% Due 2029 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 136
Debt Instrument, Interest Rate, Stated Percentage	7.50%
Debt Instrument, Maturity Year Date	2029
Notes 6.700% Due 2028 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 115
Debt Instrument, Interest Rate, Stated Percentage	6.70%
Debt Instrument, Maturity Year Date	2028
Notes 6.800% Due 2036 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 17
Debt Instrument, Interest Rate, Stated Percentage	6.80%
Debt Instrument, Maturity Year Date	2036
Notes 7.000% Due 2038 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 11
Debt Instrument, Interest Rate, Stated Percentage	7.00%
Debt Instrument, Maturity Year Date	2038
Notes 7.100% Due 2027 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 6
Debt Instrument, Interest Rate, Stated Percentage	7.10%
Debt Instrument, Maturity Year Date	2027
Notes 3.100% Due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 250
Debt Instrument, Interest Rate, Stated Percentage	3.10%
Debt Instrument, Maturity Year Date	2021
Notes 2.800% Due 2022 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 1,100
Debt Instrument, Interest Rate, Stated Percentage	2.80%
Debt Instrument, Maturity Year Date	2022
Notes 2.500% Due 2022
Debt Instrument [Line Items]
Repayments of Debt	$ 1,100
Debt Instrument, Interest Rate, Stated Percentage	2.50%
Debt Instrument, Maturity Year Date	2022
Notes 8.750% Due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 250
Debt Instrument, Interest Rate, Stated Percentage	8.75%
Debt Instrument, Maturity Year Date	2021

Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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+ References

No definition available.

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Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

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