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Long-Term Debt and Interest Rate Swap Arrangements (Debt) (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Mar. 31, 2013
7.125% Senior Secured Notes
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Dec. 31, 2012
7.125% Senior Secured Notes
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Dec. 31, 2011
7.125% Senior Secured Notes
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Mar. 23, 2010
7.125% Senior Secured Notes
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Mar. 31, 2013
7.5% Senior Secured Notes, net of original issue discount
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Dec. 31, 2012
7.5% Senior Secured Notes, net of original issue discount
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Dec. 31, 2011
7.5% Senior Secured Notes, net of original issue discount
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Sep. 25, 2009
7.5% Senior Secured Notes, net of original issue discount
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Mar. 31, 2013
7.375% Senior Secured Notes
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Dec. 31, 2012
7.375% Senior Secured Notes
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Dec. 31, 2011
7.375% Senior Secured Notes
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Mar. 23, 2010
7.375% Senior Secured Notes
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Mar. 31, 2013
5.125% Senior Secured Notes
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Dec. 31, 2012
5.125% Senior Secured Notes
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Jul. 02, 2012
5.125% Senior Secured Notes
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Mar. 31, 2013
Senior secured credit facility
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Dec. 31, 2012
Senior secured credit facility
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Dec. 31, 2011
Senior secured credit facility
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Mar. 31, 2013
Capital lease obligations
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Dec. 31, 2012
Capital lease obligations
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Dec. 31, 2011
Capital lease obligations
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Debt Instrument [Line Items] | ||||||||||||||||||||||||
| Debt and capital lease obligations | $ 3,596 | $ 3,477 | $ 2,490 | $ 376 | $ 500 | $ 500 | $ 500 | $ 760 | $ 988 | $ 986 | $ 1,000 | $ 500 | $ 500 | $ 500 | $ 500 | $ 500 | $ 500 | $ 500 | $ 328 | $ 903 | $ 434 | $ 82 | $ 86 | $ 70 |
| Current portion of debt and capital lease obligations | (11) | (12) | (10) | |||||||||||||||||||||
| Long-term portion of debt and capital lease obligations | $ 3,585 | $ 3,465 | $ 2,480 |
| X | ||||||||||
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- Definition
Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Obligation related to long-term debt (excluding convertible debt) and capital leases, the portion which is due in one year or less in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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