Earnings per Share and Equity (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Apr. 03, 2015	Mar. 28, 2014	Dec. 31, 2014
Dividends Payable [Line Items]
Anti-dilutive shares	1,000,000	7,700,000
Payments of tax withholding for restricted shares	$ 11.2	$ 4.5
Common stock withheld underlying restricted stock units	900,000
Treasury stock, shares, reissued or retired during period	0
Non-controlling interest in consolidated subsidiary	21.6us-gaap_MinorityInterest		20.9us-gaap_MinorityInterest
Net Income (Loss) attributable to non-controlling interests	$ 0.7	$ 0.2
2.625% Notes, Series B
Dividends Payable [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.625%		2.625%

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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