Aggregate number of common shares reserved for future issuance.

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Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

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No definition available.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Number of common shares issuable upon conversion for each share of preferred stock to be converted.

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The percentage rate used to calculate dividend payments on preferred stock.

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Aggregate dividends paid during the period for each share of preferred stock outstanding.

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No definition available.

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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Number of shares issued during the period as a result of the conversion of convertible securities.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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No definition available.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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No definition available.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Stockholders' Equity and Stock-based Compensation (Narrative) (Details) $ / shares in Units, $ in Millions				3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares	Jul. 22, 2022 USD ($) shares	Apr. 15, 2022 $ / shares shares	Sep. 30, 2022 USD ($) $ / shares shares	Oct. 01, 2021 shares	Sep. 30, 2022 USD ($) d $ / shares shares	Oct. 01, 2021 shares	Dec. 31, 2021	Jul. 16, 2013 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares to be repurchased									20,000,000
Remaining number of shares authorized to be repurchased	20,000,000			20,000,000		20,000,000
Common shares reserved for issuance under the 2007 Omnibus Incentive Plan, shares	44,000,000			44,000,000		44,000,000
RSU/PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost \| $	$ 239			$ 239		$ 239
Weighted average period for cost to be recognized	2 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost \| $	$ 262			$ 262		$ 262
Weighted average period for cost to be recognized	2 years
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchased (in shares)		3,906
Stock repurchased \| $		$ 1
Preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued in connection with MCPS conversions				0	0	(1,700,000)	0
Preferred stock \| Preferred stock series A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, dividend rate, percent			4.75%			4.75%		4.75%
Preferred stock, convertible, conversion rate			6.6632
Common stock issued in connection with MCPS conversions			11,000,000
Dividends paid (in usd per share) \| $ / shares			$ 11.875
Preferred stock \| 5.00% Mandatory Convertible Preferred Stock, Series B, without par value
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, dividend rate, percent						5.00%		5.00%
Preferred stock, liquidation preference per share \| $ / shares	$ 1,000			$ 1,000		$ 1,000
Preferred stock \| 5.00% Mandatory Convertible Preferred Stock, Series B, without par value \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, convertible, conversion rate	5.0143			5.0143		5.0143
Preferred stock \| 5.00% Mandatory Convertible Preferred Stock, Series B, without par value \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, convertible, conversion rate	6.1425			6.1425		6.1425
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold consecutive trading days \| d						20