Cash Flow Information	3 Months Ended
Cash Flow Information	Mar. 31, 2013
Supplemental Cash Flow Information [Abstract]
Cash Flow Information	Cash Flow Information Cash payments for interest were $66 million and $65 million for the three months ended March 31, 2013 and 2012, respectively. Cash payments for income taxes were $57 million and $48 million for the three months ended March 31, 2013 and 2012, respectively.

The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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